Okay so I have hope for you yet.
I pretty much had the same thing happen to me but I started out in Biology before I found my spark again in Psychology. I graduated with both Bachelors May 2013 however, the damage done to my GPA (Yay for a cumulative of 2.7) was hard to fix. I also share the same background (multilingual, latina, minority research interests, etc.) so I can definitely see where you are coming from.
So what do you do when your GPA is craptastic and you want to pursue Psychology?
You take off for a bit and pursue a research internship or job!
For what you don't have in booksmarts, you will have the opportunity to show in your practical skills and actual work experience. Granted it's going to be a tough battle, but it's not truly over for you. Find a mentor who shares your interests and start out as a volunteer and help out just to gain experience. I did that and I think that in all honesty, it has become preparation for the future when you begin to get poster presentations, symposia, and talks under your belt. You can put things like that on your CV so it will definitely help. Additionally, a good GRE score will bolster you up too! I did a-okay on mine (V-156,Q-149,AW-5.5) even though my practice scores were tons higher but it was above, as GradApplicant201420 said, the 70th percentile for each section.
Make sure your heart is in the right place for wanting to go to grad school. If you have the passion for it and get a research opportunity, it will show. Plus you're not alone- there's more of us than you know who are in the same boat and hoping that we'll get lucky.
I wish the best of luck to you and I hope what little input you get here helps