lemma

Thanks everyone for the great advice. I went through with my resignation with the above suggestions in mind, and it turned out much better than expected. My managers were very supportive, and I have a job to come back to after my PhD if I choose to do so. 
I will continue working for another month or so, and I'll make sure that my boss is aware of how much of a positive influence her mentorship has been. 

Prescription sunglasses arrived, and they are a game changer. 

There's a quote from Louis C.K. that I think is applicable here:
“The only time you look in your neighbor's bowl is to make sure that they have enough. You don't look in your neighbor's bowl to see if you have as much as them.”
My first year of grad school I was getting $3000 less in aid per quarter than everyone else in my cohort because I screwed up my FAFSA. I was broke. Constantly. So I rarely went out. Everyone else also complained of being broke but went out much more frequently. At the time I didn't know about our financial discrepancies. I just assumed they were eating fast food less frequently than I was and therefore had more discretionary spending for bigger things.
You're being fairly uncharitable towards those you are in school with. And not everyone's versions of struggling are the same. Playing a pain comparison game and denying them the right to express their own frustration with finances because they *seem* to be better off than you isn't going to win you any friends. You have branded them liars with bad attitudes, it seems, without really getting to know them. You have already decided what type of people they are. So yes. I'd say this is an insecurity on your own part that needs remedied.
Not to be harsh... but i wouldn't want to be friends with someone in my cohort who felt as you do. Anyone who begrudges another person the good things that come their way and assume it means they don't get to have problems also isn't a person I am interested in spending my time with.

You don't know what is going on with their life or how they got their money. Maybe they worked in undergrad.  Maybe their parents do help.  Maybe they have been saving for awhile. Maybe they have someone to split the bills with.  I don't see how it is productive to spend time comparing yourself to them or judging them.

I don't find New Haven dangerous, but I've spent a lot of time there so know it well. Yale is beautiful, and there are a lot if great places around campus to eat (if you end up there, feel free to message me for recommendations). 
New Haven - at least where Yale is - is a very urban setting. There are many beautiful courtyards at Yale that are idyllic, but the 14 residential colleges usually have access restricted to undergrads. 
I prefer Yale's campus over Cornell's, but I like living in Gothic castles in an urban environment. The area past Science Hill and into the Divinity School is an oasis of calm. 

Got a new ear piercing today, and barely even felt it 

Awesome! Sounds like they were a catch. 
I started wearing glasses this year too and it has made a world of difference - things are sharper and more beautiful, and I almost never get headaches anymore. I hope that they're helpful for you too! 

Unless financial troubles hit hard, I would never have a non-romantic partner roommate ever again. I had two years of miserable housing assignments at college. It weighed on me daily. 

Bought boyfriend’s ticket home today. I haven’t seen him in person since March. He will be home in time for Super Bowl week (hosted in the city where I live). I decided to go all out and bought matching 90s outfits- starter jackets, baseball hats, acid washed jeans, Keds, and fanny packs. We’re going to go downtown allllll decked out to celebrate his return! He’s flying into Chicago, so I booked a private tour of Wrigley Field, too. 
I’m just excited to have my partner in crime home. 

Me too

Unless financial troubles hit hard, I would never have a non-romantic partner roommate ever again. I had two years of miserable housing assignments at college. It weighed on me daily. 

I cried in front of one of my professors on my third day of undergrad. I think some other students also saw. I was a long way from home and feeling culture shock, and was struggling to understand the class - I was overprepared for half of it, and very underprepared for the other half of the class. 
She was very compassionate, and spent an hour and a half with me in her office working through my reading that week. I had to work so hard in that class, and she helped me immensely. 
We're all human, you know? Sometimes, no matter how well we usually manage ourselves, emotions can be really strong. I would think quite negative things about a professor who ostracized a student who was vulnerable. It feels really bad to be that overwhelmed, and I think most people (including professors) are empathetic enough. 

I think your question has already been answered well, but wanted to pop in to give hugs and say best of luck with the procedure!

I used to use Dropbox primarily. The "Great Space Race" for student accounts gave me tons of space (22 GB). Sadly, all of this bonus space is about to expire (in a few weeks) since I graduated last summer. In addition, my new workplace does not allow Dropbox or other cloud storage for all data (very inconvenient!). But I loved how Dropbox syncs with my desktop very easily and I can even access files on my phone via their app (great for saving PDFs of boarding passes, hotel confirm etc. and then set those files viewable offline---i.e. download to phone---so that I can always have access to important info). I also like how Dropbox can selectively sync certain folders only (e.g. I don't need my personal stuff on my work computer and vice versa).
Google Drive now has the option to integrate with your computer just like Dropbox. You get way more space for free (15GB) without strings attached, but this storage space includes everything google. My emails take up 11GB alone (although I can probably delete some things). I am now in the Google Drive camp now because I really like Google Photos (recently put all my photos on the cloud there, at no cost) and I can scan files with my phone directly into Google Drive. I find it easier to just have everything in one infrastructure and I basically use Google for everything. I also like that I can buy more storage space from Google in more reasonable chunks. For example, I can buy just 100 GB of storage from Google for 1.99USD or 2.79 CAD per month. With Dropbox, the only options are the amount of free space you get/earn or buying 1TB at 12.99CAD per month. 
However, Google Drive direct sync-ing is still not allowed with my workplace. During grad school, my advisor bought me a 3TB hard drive to back up my stuff, plus I stored things on my department servers (all of this in addition to having some things on Dropbox as well). At my postdoc now, I primarily back up with an external drive that my work has purchased for me. I also use github and bitbucket repositories to store a version-controlled copy of my computer code (some stuff is private but much of my work is already publicly accessible) and other important files (presentations, CV, website content). My data itself (which takes up a ton of space) are stored on institutional servers that have their own backup systems---I only access the data remotely from my own machines and run analysis on them. 

There's many offers of Cloud software around, I recommend you take a look at a few of them and find out what works best for you. You should be looking for: Size, availability and partnerships (many unis offer for instance courtesy access to cloud service X), and fees/free service.
Take a look at OneDrive (Microsoft), GoogleDrive (which apparently you don't like), Dropbox, and maybe also google whether there are other ones - although you probably won't find anything significantly better. I use OneDrive myself.

With a Mac, you can always update your operating system. Until I upgraded my mac earlier this month, I was running the latest OS on my 2012 Macbook Pro. The only major downside is that an old computer is slow and if you got one with not a lot of computing power 4 years ago, then it may not be relevant today. So you don't have to worry about it being compatible with software (since you can update your Mac's software). And unless you got something really really old, I can't see why your 4-years-old hardware won't be able to run something for work today. It might just be really slow.
In any case, whether you want to upgrade your Mac or keep using the old one, just wait until you start doing the really heavy data driven stuff for work. You'll find out very soon if your computer is compatible. You can get a new Mac in a week (and Mac Migration software makes changing computers very easy!) or maybe even the same day if you live near a Mac store.
I think the biggest limitation for my old computer was RAM so I made sure to get one with 16GB of memory this time so that it can hopefully still run smoothly in 5 years. My old one only had 4GB and it could still run everywhere I needed (again, just really slowly). 

For 2018, I'm going to try and give myself the space to be creative. I'm going to continue to distance myself from toxic people in my life who pull me down. 
2017 had a few highlights. On the personal side, it was the first calendar year in four years during which I wasn't admitted to hospital. For me, that is huge. My partner and I moved in together in late 2016, and it was magical being next to him each day, especially coming out of a period of long distance. 
On the professional side, I had to relearn what it meant to feel passionate and confident. My self esteem and mental health had taken a real beating at my old job where I was bullied, but my current role has allowed me to rediscover my own voice and produce work that makes me proud. I was admitted into my top choice PhD program a few weeks ago, and found out I was ranked extremely high by the university, which was both a highlight and a surprise. 
2018 will be a demanding year, but bring it on! I hope I can give back to those who have given so much to me. 

I didn't get in anywhere last cycle. It hurt and was disheartening, but I planned to reapply. I actually ended up applying to programs outside of my previous field because my research interests were a better fit there. This change, in addition to all the rejection last year, made me really nervous about my chances. I found out this week that I got into one of the top programs I was interested in and they sent an email saying I was a top applicant. 
The point is, my GRE, GPA, background, and LoRs didn't change between the app cycles. This year I made sure to apply to programs where I knew I was a great fit, talked extensively to profs that I wanted to work with, and polished my SoP until the damn thing was shining bright like a diamond. Ultimately, this proves to me what we (and the programs) always say: it's not so much about the numbers. It's about goodness of fit and your ability to articulate that fit. Don't worry so much about the acceptance rates and published stats (unless the program explicitly states cut-offs or something). 

Would updating the OS not resolve any compatibility issues? 
Edit: sorry if that was a dumb question, lol. I don’t know if you would consider Psychology a data-driven discipline but I haven’t had any issues using a Mac so far! 

Looks like this professor really doesn't want to write you a LOR, OP. You should probably stop asking her for one.

I had a really good day today! I've been staying with my parents while my partner is helping out his parents in another city. My mum and I did so many things together: we made baba ganoush in the morning, then made this picked/fermented vegetable dish for the first time (and it smells so good!), and after all of that we went shopping. I found a few shirts and dresses that are within my PhD student budget, and then treated my mum to coffee and cake. The absolute catch was that they had a gluten free version of my mum's favourite cake that she hasn't been able to eat since being told she can't ever eat gluten again. And it tasted good (and not like most gluten free cakes)! 
On top of all that, my partner used his health insurance optical to buy me a pair of prescription sunglasses at no extra cost. I've been finding my non-prescription ones hard to use, as my vision is much worse in low light (it's not completely terrible in bright light though glasses still help), so I can't see people's faces or signs if I wear my old sunglasses. He chose the smallest pair as I'm pretty small, and I'm not sure if they'll suit me, but I'm very excited to use them!

Awesome! Sounds like they were a catch. 
I started wearing glasses this year too and it has made a world of difference - things are sharper and more beautiful, and I almost never get headaches anymore. I hope that they're helpful for you too! 

Would you consider deferring the PhD and doing another year at the small company? Having industry experience apparently helps a lot when trying to enter industry post a PhD. The few months you have at this point would be considered negligible. I'm in a different industry, but when I was changing jobs, headhunters usually expected 2+ years before they were willing to work with you. Spending another year working in industry before your PhD might be better for your overall goals, and might mitigate this somewhat. 

Thanks everyone for the great advice. I went through with my resignation with the above suggestions in mind, and it turned out much better than expected. My managers were very supportive, and I have a job to come back to after my PhD if I choose to do so. 
I will continue working for another month or so, and I'll make sure that my boss is aware of how much of a positive influence her mentorship has been. 

I think charging for costs (travel) is very reasonable. I've volunteered to travel to remote Australia to give my mental health journey talk and I will be receiving compensation for travel costs. I could not go otherwise. 
At the end of the day, it's up to you to do what feels most appropriate. I talk about mental health and I'm an applied mathematician - it has nothing to do with my day job. I personally would never consider charging due to my motivations for doing the work. Each to their own, though. Only you know what your precise situation is.