I am so sorry you have so much to deal with
If your mother is still in your life and continues to abuse you then you need to get away! I know it is hard to cut ties with family but look at what it is doing to you! You have to take care of you now. Sever all ties with toxic relationships and give yourself time to heal.
That's just my .02 cents....I did it with my father and brother and it worked well. I talk to them a little today but not much. Contact is only done if I initiate it. I do not give them my phone numbers and always hit *67 before dialing their numbers (*67 blocks your phone number on their caller ID by the way).