morally, am i in the right to try to disown my mother for good even if she never treated me good?

i just recently turned 23 and have a very violent mother. i have four other siblings and my mother had always treated the first three of us bad but only 4 out of 5 of us live with her. when we were younger she would beat us violently for anything. she is always angry and nagging. she always brings up how much she hates our father and how we are too much like him and his family. the last time she hit me i was 17 but the verbal abuse never stopped. i attempted suicide once because i couldnt handle her verbal abuse any longer. its always been constant. non stop when ever we are home together. i have always tried to be an obedient daughter to her but mostly out of fear. im 23 and havent even had a boyfriend yet because she had always threatened me about having one. i dont have friends either cause she thinks if i talk to girls then that must mean im a lesbian. the only thing i do is work and school other wise she will start questioning me again. lately her verbal abuse has been worse and im having suicidal thoughts again. i get desperate because im broke and a college student. i cant move out but she wants to leave me and my brother behind so she can get with this young guy which i dont care if she leaves but i decided that once we part ways i dont want to ever have contact with her and i rather not even think i had a mother to begin with. she caused me alot of mental health problems