This is a never ending cycle

Living with someone you don’t know is near impossible when it comes to staying sane. I love her because she is my sister, but I don’t know her. And in turn she doesn’t know me, she doesn’t know how it drives me insane when she pushes her son on me, it drives me crazy when I have to take the dog out when it’s not my dog and I don’t want it. It drives me insane when I sit alone in silence while she sits in silence with her boy friend who claims to have real feelings for me rather than any feelings for her. It drives me crazy being in the middle of their relationship drama just because I live here, I’m going insane living in this apartment. I’ve told her more than once about how this house puts so much stress on me because of her son, her and her boyfriend, and the dog. I am so stressed I don’t go a day without becoming sick. I wait for the day I get to return to school and not be here for multiple hours.  She says she’s trying to make everything work but nothing is changing at all. And I am beyond unhappy.