Is OTHER wrong in the post ? POST : She’s had a history of depression for the past 5 years or so (started in high school, she’s a college Junior). I like being there for her; I see her almost every single day, and we live in apartments just over a mile from each other. Yet, she dumps all of her emotional baggage on me, and not any of her three female roommates (one of whom she declares her best friend). The aforementioned best friend seldom knows about it when my gf has this bouts of depression, simply because gf hides it from her. And, gf’s best friend and I are pretty much the only people she hangs out with regularly. She almost exclusively vents to me, and I feel worn out most times, but she also gets upset with me for “not showing that I care” about her emotions very often.  
Also, I always sleep poorly when we share a bed, just because she makes it hard for me to move in her sleep. I don’t hold that against her, but I do try to avoid sharing a bed more than 3-4 nights in a row. 

So that’s the background. 

She stays at my place more than I do hers, simply because her complex is more than happy to give you a parking ticket if you lack their validation. Exclusions are weekdays between 9p and 8a, and all day Saturday/Sunday. Tonight, she needs to study for two exams she has in the morning. She asked me to come over to her place and help her study and leave in the morning (meaning I’d get about 5 hours of sleep at best), even though I work in the morning. I told her I’m emotionally drained right now, being her only support group, and I just need to rest; so, I’d like to just sleep at my place and have her go to hers. What I requested is exactly what happened. Should I have pushed through and dealt with more crappy sleep, or should I be selfish and keep myself together? AITA?