Is my mum abusive?

my mum is an alcoholic and has bpd and bipolar, whenever she drinks she drinks to the point of blind drunkness and she gets extremely aggressive and abusive, however even outside of being drunk she can also be abusive. whenever she has these "episodes" no matter how much she's hurt someone she thinks she can just say sorry and blame it on her mental disorders and everything will be fine and back to normal. not only does she do this to me, she has done this to my dad, my sister, other family members, etc. my mum and me, my dad and sister are in a constant repeat of everything being normal and okay, then my mum goes crazy and attacks or verbally abuses someone, she says sorry and then eventually we all "forgive" her.

the thing is though i still love her and i have tried a few times to get her out of my life, but she makes it super hard and always keeps coming back because she's really good at emotionally manipulating people and also playing the victim. she will always have an excuse for something terrible she did and tries to make it out as if she's the victim and the one people should be feeling sorry for. it's hard to escape because i've dealt with this my entire life since as a young child being raised in this background.

these are a few things she has done to me or someone else -

- rubbed my face in dirty underwear with feces on them because i had an accident in my pants when i was 5

- she killed one of my pets by turning around and whacking a large wooden board on the ground but didn't look first to see if anything was behind her and my pet was behind her and got whacked and died, she then burned my dead pet and i didn't know about this until weeks after while she was very drunk she told me what happened, led me outside to show me my pets burnt corpse, picked up my dead pets body and threw it across the fence while i was telling her to stop because i wanted to bury her. this is one of the things i will never forgive her for

- beat me until i was on the floor curled up in a ball to the point my dad had to get up and stop her because i pushed my little sister

- as a child called me a lot of swear words and nasty names, making me feel unwanted and depressed

- constantly tries to turn me and my sister against our father by telling lies to try and make us hate him and picking on every little thing he does because she's salty that my dad got guardianship over me and my sister and raised us instead of her

- went onto facebook writing all sorts of disgusting lies about my dad like that he likes children and he is a p*do all over facebook so everyone saw

- manipulated me and my sister into hating our dad so we moved in with her, where she badly verbally abused us and constantly got drunk as well as bringing her abusive bf over constantly and refusing to keep him away even though both me and my sister kept telling her we didn't want him over because of how violent he is

- after we had enough and went to leave and live back with our dad she called the police as my dad came to pick us up thinking she can somehow force me and my sister to stay with her