So... hi at first. It's not exactly about my sibling or something but my roommate I'm kind of trapped with (and I can describe our relationship as sister-ish in some way).
We've met few years ago and in 2018 she said "hey, l'll go to the same university as you and we can rent a room together!" - I agreed, although I felt she's not mentally well but I thought "I can get through this" cause I really needed any roommate. After a few days I've realized that something's really wrong with her - I've beaten depression, been in mental hospital, seen a lot of cases there and a big red alarm in my head turned on. Took me a long time to bring her to psychiatrist and when I finally did it, they diagnosed BPD+passive-aggressive personality+AvPD+several others and instantly locked her in hospital for 3 months.
She came back in October and it seemed she's better but after a few weeks her friends started to ask me, one by one, how can they run away from her because she scares them, tries to destroy their relationships with parents/friends/significant others, destroy their own self-esteem, forces changes in themselves and generally after the hospital she became extremely toxic person - of course they described these situations and I was terrified. Once even she tried to give to my friend a box of her strong neuroleptics as "just pills for better sleep" which could even kill him because he has big health problems (and she knew that). Like... before treatment she was more type "in", her aggression and everything was more inside and now all of this came outside, hitting others and for some reason she tried to hide it from me.
About 1.5 month ago almost all of her old friends finally ran away from her and she found new ones, who don't know about her illness yet, so now I'm on the fire line again as one of a few people who know and still have contact with her. And, well... yes, it's much worse than before. She's not a perfect roommate, nobody is, but now I feel like I'm living with 8-yo girl who has the same rights as adults, no parental control and really big problems with herself that she transfers to other people. When anything in flat is broken/missing/bad in any way, for her it's always my fault, she expects that I'll do everything to keep it clean and make her content, when I try to force her to do anything, she gets angry and have bigger or smaller aggression attack, sometimes she's aggressive to my cat and my friends when they're visiting me, also she tries to destroy my relationship with my boyfriend.
I really want to leave but I can't. I have almost 2 years of studying left, have a part-time job, but I don't earn enough money to move from here and leave this cheap flat I live with her, sometimes it isn't even enough to survive to the next payment. I'm also from poor family and they cannot help me. Her parents are rich and I have kind of... arrangement (?) with them: as long as I'm living with her and cleaning up her mental mess (or trying to), I can ask them for help when I need something, food, specialist to repair something, maybe even some money etc. Until I'm studying (I can't take a break because my degree course is already closed for new students and I couldn't continue it later on the same level) I can only dream about normal, better paid job so it seems I'm f****d up. I only hope that anybody here can give me advice how to survive with her until I get free.
By the way, I'm sorry for possible mistakes I make, I'm not native english speaker so you can point it if you want and please, don't get angry because of it
