My mom is a major *****,how can I avoid her?

I would suggest buying a lock for your bedroom, as that should get you a sort of sanctuary when you need to get away from your mother, but can't get out of the house. If I was in your situation though, I would try boarding school or something similar. Although, I doubt your mother would pay, you could try to get your father to pay for it. It might give your mother some time to figure things out and if you didn't like the school you could always go back home. Still, if the situation is persistent, then tell your father, he should be able to help.