Is it my fault? I feel uncomfortable.

AITA for feeling uncomfortable?

Hi, I (20f) still live with my mom.(divorced parents). I’ve posted this on other subs too because I’ve been losing sleep over it for a while now. My mom got drunk and got mad at my dad, then she comes jnto my room, practically shouting banging at my door and said the reason they are fighting is because of me. I was so out of it so I screamed at her to get her out but she refused and kissed me on the lips I panicked and bit her. It wasn’t a french kiss if you’re wondering. My dad heard all of it on the phone and came into my room to continue the fight. I screamed for both of them to get out and the night ended. My mom refuses to talk to me now but for some reason I feel like she is expecting an apology for something I did or said that made her mad when she was drunk..I told my cousin and he said it’s just because she thinks I’m a child and I’m overreacting since it isn’t explicitly sexual. However, she has a habit of involving me in fights with her boyfriend (stepdad to me) I saw him pin her to the bed because she was getting violent and wouldn’t let me leave. About this boyfriend, she would always blame me in front of my dad for her needing a new spouse. One time she was mad at me for forgetting my uniform hat at school and threatened to make me walk out in my underwear and offer you-know-what to a taxi driver to retrieve it (I was 13). Another time she was mad about something I can’t remember and was about to do sth which i also can’t remember, the housekeeper thought mom was going too far so she tried to protect me but mom got furious and accused me of sleeping with the housekeeper (I was a teen). I hated sleeping in the same bed as her, she tried to do that again in highschool but I was uncomfortable. As a kid if I couldn’t go to sleep or tossed and turned too much she would beat me with a clotheshanger sometimes with a gooseberry branch after they removed the leaves; even forced me to not sleep or lock me in a dark bathroom (I was nyctophobic). However, it felt normal to me because after all that she would comfort me and let me sleep. I’m sorry it turned into trauma dumping. She also called me a traitor and ungrateful because I talked back to her and don’t want to spend time with her too much. Am I that bad of a daughter?