I agree with She Cat. Why are you keeping him in your life is he is so abusivie twords you?
I cut my adoptive parents out of my life because they were so toxic. Having toxic people in your life doesn't do you any good. Let him know your boundries and if he can't respect them for what they are inform him that you are going to have to end the relationship. I struggled for years about this myself. Thinking to myself daily about the fact that I was adopted and what a "gift" that was. Fact is...every child should have a loving home. Don't feel guilty if he chooses not to respect your space and rules for the relationship you want.
So recap:
1. Think about what you want in your relationship with your father. Think about guildlines in the relationship, things you will not except such as abuse (if it helps write it down).
2. Then explain these guildlines with your father and be firm.
3. Leave the ball in his court. From then on its up to him if he is going to give you the respect and space in the relationship. Your still leaving the door open and giving him room to grow within the guildlines you have set.
If he chooses to not have anything to do with it...well its his choice. You have taken the right steps to try to "save" the relationship. You SHOULDN'T have to sacrafice yourself for this relationship. It isn't right or healthy. Take care of yourself...cause if you don't ...who will?
You are in my thoughts
-xxarmywifexx
Side note:....about the physical abuse...that should be reported. If not by her because maybe she doesn't know any better but maybe you should contact someone about that. Especially if she is in your care.