You said that she emotionally abused you and she has now physically abused you? I understand that she is a woman and you are a man but I was taught that if you hit someone, you better be ready to get hit back, man or woman. There is no excuse for physical violence. Don't even get me started on the emotional abuse. The longer you take that on the more damage you are doing to YOURSELF mentally and physically. Emotional scars are not easy to erase and it will take a while to dig yourself out of the monstrous hole it leaves inside you if you let it go on much longer.
Why are you still considering a woman who has abused you? Do you feel like that is love? Are you happy? Would you accept this treatment from a co-worker? The cashier at your grocer? A stranger on the street?
Give her an ultimatum if you want, but be ready for any outcome. I've given many ultimatums and I gotta tell you, when they don't have their desired effect, it hurts like hell.
Keep coming back, we're here for you!