Crimson Wife

Vanderbilt is extremely selective so unless you're able to retest and pull up your GRE scores in the next few months, you may want to add another less-selective school to your list. ASHA EdFind lists a GRE range at Vandy of 156-170 V and 152-165 Q.

That doesn't make sense. Master's in SLP are 1.5 to 2 years if you've got a CSD undergrad and 3 years if you're out-of-field. None of them are 5 years.
If you want to do the 2nd bachelor's online, look at Utah State, Eastern New Mexico, University of Wisconsin-Eau Claire, and Idaho State. There may be others offering a 2nd bachelor's online but those are the 4 schools I looked at.

That doesn't make sense. Master's in SLP are 1.5 to 2 years if you've got a CSD undergrad and 3 years if you're out-of-field. None of them are 5 years.
If you want to do the 2nd bachelor's online, look at Utah State, Eastern New Mexico, University of Wisconsin-Eau Claire, and Idaho State. There may be others offering a 2nd bachelor's online but those are the 4 schools I looked at.

If math is a weakness, you might want to give the Miller Analogies Test a shot. I have heard of people doing much, much better on the MAT than the GRE and there are a number of schools that will accept either.

In addition to the 20,500/year in unsubsidized Stafford loans, you are able to apply for Grad PLUS loans, which have a higher interest rate, but are still administered through the department of education, just like the Stafford loans. There are no limits to the Grad PLUS loans except the total cost of attendance for your university, minus any other aid you are receiving.
Information about Grad PLUS can be found here: https://studentaid.ed.gov/sa/types/loans/plus#how-much

Have you contacted the CSD department heads? I've found that some schools are fine with applicants who have all but 1-2 courses. I've yet to find a "working with multicultural populations" CSD class available online and my 2nd bachelor's doesn't offer voice or fluency. I might take those latter two elsewhere but it depends on my final list of schools.

Others have given you good advice so far. One thing I'd like to touch on if you don't mind.. you talk about many difficult circumstances you had that impacted your academic record. I actually see you listed at least 4 different situations. I would advise against making these the focus of your personal statements. At the time I applied, I was quite close to one of the faculty members who had served on an admissions committee for many, many years. I, too, went through some tough situations that I believe influenced my grades in one way or another. I asked my professor if she thought I should refer to this in my personal statement as a way to explain why I didn't have higher scores. She told me that personally, she really wouldn't because for many students, it often comes off sounding like a myriad of excuses. She said it was much more important to focus on keeping a positive tone as opposed to a negative one. Take this as you will, but I do think her advice helped me get into several of the programs I applied to. 
Do you have any plans to retake the GRE? Your AW score is just a bit low; I've always been told you want a 4.0 at the very least.
Some other thoughts now that I've reread your comments a bit more thoroughly. You say there are autism clinics around you but you haven't reached out to contact them because you aren't interested in this population. This is perfectly fine, but I highly recommend you reach out regardless. During your time in grad school, you will have the opportunity to work with a plethora of different populations and clients, and pretty much every school has an autism clinic on campus. Working in one of these will provide MUCH more relevant experience than what you currently have. Just because you volunteer in one for a year or so doesn't mean you'll only have to work with this population for the rest of your life. It seems a bit strange that you say you are worried grad schools won't think you're invested and that you want this more than anything, but you haven't reached out to these clinics yet. You say  you feel as if you can do better academically, but you haven't shown it yet, and this is what admissions committees need to see.
Your biggest detriment is your low GPA. You can offset this by getting great GRE scores, stacking your resume with relevant experiences and extra curriculars, and/or doing extremely well in any other leveling/post bacc COMD courses. So far, you haven't really done any of these. I recommend you take some time to accomplish these things and show the schools that you have what it takes. You already have a very competitive GRE V score so you can definitely do it. Just keep moving

Speaking from personal experience, high GRE scores (specifically, 162 Verbal, 154 Quant and 5.5 AW) are the main reason I got into my Master's program at UM, despite my low GPA. And by low, I mean very low: 2.78 to be exact. Granted, this was for my last two years; my first two years at Community College I had a 3.6. Still, if I hadn't studied my butt off for the GRE and gotten great letters of rec from my former professors, I doubt I would have had a snowball's chance of getting in.
My advice is, buy a GRE study book, and download a free study app or two on your phone. I scheduled my test date for three-ish months after I bought the book (Manhattan Prep 5lb GRE book, $15 on Amazon). I spent about 15 hours a week studying, and took 4 free online practice tests before the exam itself. Here are a bunch. Not all are great, but I took all of the top three, and they were very similar to the real thing (one of them lets you take it twice).
https://crunchprep.com/gre/2014/free-gre-practice-tests
Good luck!

The "red flag" I see is your low GPA compared to your decent GRE scores. If you're smart enough to score in the 90th percentile for verbal GRE, you should really have a much better GPA than 3.07 UG and 3.34 for post-bacc. I don't know you but if you don't have any extenuating circumstances to explain the mediocre grades, my immediate thought is lack of maturity. My recommendation would be to work in a related field for a few years while continuing to take leveling classes (in-person if that is a better fit for your personality) and then trying again.

Have you modified the school list to include "future schools" and not just "current schools?" The list with future schools shows the ones that will be added during this cycle. Several of the schools I want to apply to are not yet included (or, in the case of Central Florida, only has the spring app up for some reason) but are on the future schools list.

A lot of other people have given some great feedback. However, I want to address this little bit of what you said as it concerns me greatly. I realize that I'm probably going to come off as harsh when I say this, but to be quite honest, there's really no point in going through the process of trying to get into school for SLP if these are her extant habits. Grad school is incredibly difficult and demands discipline, motivation, and a lot of hard work. Someone like her is gonna have a bad time if they haven't committed to turning over a new leaf. Has your friend expressed an intent to "turn it around," so to speak, and avoid doing this in the future?

There are schools that accept the Miller Analogies Test in lieu of the GRE (no math on the MAT!) There are also schools that do not require the GRE at all.

Play up the bilingualism, especially if you are fluent in Spanish since there is a huge need for Spanish-speaking SLP's. Bilingualism could get you in over monolingual applicants with higher GPA's (since a 3.7 shows that you are capable of handling the courses).

Some programs explicitly say they look at the last 60 credits. I would bump those to the top of your target list. I would also recommend enrolling in the easier CSD pre-reqs so that you can have those fall semester grades added to your GPA calculation. Every A you can get now will help off set some lower grade on your transcript.

Last paragraph - so true.  (And yes, apologies to OP for the tangent...)  I know someone who wrote a personal statement that very gracefully addressed their having had to retake a few CD major classes due to personal reasons, in two sentences.  And this SOP was, by far, the best I've ever read and probably the best I will ever read.

I would definitely recommend every applicant check what enrollment records the National Student Clearinghouse has on him/her because that is extremely easy for the grad school to check. It is specifically exempt from FERPA because all it verifies is that the student attended a particular college for a particular term, not what those grades were. But if the college is listed and the applicant has NOT sent the transcript to the grad school, that is a definite "red flag" and the AdComm is likely to ask. A transcript with good grades probably would be seen as an oversight but one with poor grades looks like a deliberate hiding.
You may not agree with the policy of requiring transcripts for unrelated coursework but telling someone to hide them is bad advice.

I would definitely recommend every applicant check what enrollment records the National Student Clearinghouse has on him/her because that is extremely easy for the grad school to check. It is specifically exempt from FERPA because all it verifies is that the student attended a particular college for a particular term, not what those grades were. But if the college is listed and the applicant has NOT sent the transcript to the grad school, that is a definite "red flag" and the AdComm is likely to ask. A transcript with good grades probably would be seen as an oversight but one with poor grades looks like a deliberate hiding.
You may not agree with the policy of requiring transcripts for unrelated coursework but telling someone to hide them is bad advice.

I would definitely recommend every applicant check what enrollment records the National Student Clearinghouse has on him/her because that is extremely easy for the grad school to check. It is specifically exempt from FERPA because all it verifies is that the student attended a particular college for a particular term, not what those grades were. But if the college is listed and the applicant has NOT sent the transcript to the grad school, that is a definite "red flag" and the AdComm is likely to ask. A transcript with good grades probably would be seen as an oversight but one with poor grades looks like a deliberate hiding.
You may not agree with the policy of requiring transcripts for unrelated coursework but telling someone to hide them is bad advice.

I would definitely recommend every applicant check what enrollment records the National Student Clearinghouse has on him/her because that is extremely easy for the grad school to check. It is specifically exempt from FERPA because all it verifies is that the student attended a particular college for a particular term, not what those grades were. But if the college is listed and the applicant has NOT sent the transcript to the grad school, that is a definite "red flag" and the AdComm is likely to ask. A transcript with good grades probably would be seen as an oversight but one with poor grades looks like a deliberate hiding.
You may not agree with the policy of requiring transcripts for unrelated coursework but telling someone to hide them is bad advice.

If a school asks for all academic transcripts... then they want all academic transcripts. Not including some because the grades are lower could be viewed as dishonest. If the grades were A´s, I bet no one would assume you were hiding anything and it would be chalked up to an honest mistake. If you really want to avoid sending the transcripts, you´ll have to ask each school... but I´m guessing you´re still going to have to send them. 
Sort of a side note rant: I agree that sending transcripts is an expensive and stupid process that could be made much easier. I think the lesson is that when you´re an academic one day maybe working for a university or school, you should advocate to change the policy for a better one. I know I´m never going to forget how terribly inefficient (and even rude at times) ETS was when I was registering for the GRE. If one day I´m in a position to influence admissions policies, I´ll think about our institutionalized faith in ETS and its exams. 

I have never used financial aid but the National Student Clearinghouse has a record of my attendance just the same. If the college participates in the Federal Student Loan program, they report on ALL students, not just the ones who receive Federal financial aid. There are over 3,600 participating institutions so it would be pretty unlikely if the OP's college is not one of them.

I think your GRE scores are simply too low. 148 on the quant is below the 50th percentile which will be a red flag to many schools. Even two points at 150 would make a huge difference. If you did your prereqs online, some schools may think it was not rigorous enough, so you need to prove yourself a little bit with the GRE. Yes, it sucks, but I would hate for you to not get in this coming cycle just because your GRE score was a little too low. 
I feel you on the math component. I got a score lower than yours. I am retaking and aiming for 150-155 on the quant. 

"I was reading online that you have to include all transcripts of all institutes applied to."
Were you reading this on the webpage of the schools you were applying to? If so, I think you have your very black-and-white answer. CSDCAS doesn't leave wiggle room on this. If your institution doesn't either, there is no chance I would omit required academic records.

I'm going to have to disagree here.  300 does tend to be acceptable to many programs, but due to the competitive nature of SLP grad school, I personally would advise you study hard and retake for a more competitive score.  I also disagree that most schools disregard the quant score - certainly the top schools do not disregard it.  It seems you have extra time, so as long as retaking doesn't break the bank I would do so.  What is your overall cumulative GPA now after having taken 8 SLP pre-reqs?  Are your letter of rec writers really strong?  How about your SOP?  If you haven't already, start working on it now, and have qualified people who aren't afraid to give honest critique read it.  (Think PhDs, English majors, SLP professors, etc).  What schools are you applying to?  As far as experience in the field, try to get some!  ABA, literacy tutoring, hospital newborn hearing screening, volunteering for an SLP or autism program, etc etc are all viable options that will give you some more "real world" experience and will add depth and dimension to your SOP.  
Sorry to bombard you with questions, but the answers will help the SLP students who have been through the application process give better-informed answers.  

I´d say get an SLP related pre-req in order to earn an academic LOR and focus on the GRE and your Personal Statement.