I want to cut ties with my mother
Why do you want to cut ties with your mother?
She was indoctrinating my brother and she's a psychopath.
If your mother is causing you and your family pain, it is wise to want to cut her out of it. It can be easier to do that sometimes than to just suffer through it.
I'm going to go through it if she doesn't fuck off by herself.
I was agreeing with you, but I think you should tone down the toxicity. You don't need to get on her level. I hope you can have a better life without these kinds of people bringing you down.