Is it normal my mum sucks?

This is probably gonna be long so fuck off if you're a lazy cunt who is unable to read properly.

I hate my mum so much, she's verbally abusive, manipulative, and creates drama over the smallest things. My mum and dad divorced 11 years ago but the only reason my dad still sees her is for me and my sister. We used to live with my mum, who use to fucking beat me up and abuse me, but she had an accident involving her back and gave us up to our dad.

Now my dad claims my mum never asked to give us back to her, but my mum tells me she made my dad promise her that when she got better he would give us back to her. I don't trust my mum though because she's a bitch and always tries to blame everything on my dad no matter what. I don't take sides but whenever I know my mum is in the wrong and defend my dad she'll start saying stuff like whose side are you on or so you're on his side? I'm not on any fucking side their both my parents and I'll call them both out on their bullshit if they're saying something that isn't true.

My mum is also an alcoholic, she calls me names and also tries to steal my money and when I don't give it to her because I'm poor as fuck and need to pay for rent and food she calls me greedy or a selfish bitch.

She also use to do this thing when me n my sis were living with her is if one of us were misbehaving she would give all the attention to the other one and say things like "I'm glad you aren't like your sister" or "you're perfect and not like your horrible sister" but she would switch sides and do this to both of us which caused us to fight a lot.

The reason I'm so pissed is because I still have to fucking see the cunt, if I cut contact with her it'll be bad for both me and my dad and sister because she'll start a huge drama, blame it on my dad like "did dad tell you this? This is all his fault" like no bitch you're the problem!! She'll then try sending me messages on facebook like "oh I can change I'm sorry darling I love you I'm crying because you're not talking to me" etc. I know this because I've already tried it and that's exactly what she did, the only reason I started seeing her again is because she was deliberately stressing my dad out and pushing him for it even though it was my free choice and he had nothing to do with it. She's even called child protection services on my dad because she was drunk and posted on my facebook wall about my dad being a pedophile (she was drunk then to) who the fuck does that? My mum is a psycho bitch and I wish I had a different mum because deep down I still love her and it fucks me up so bad and I hate my life and everything so fucking much