I treat my mother/abuser with respect, but that is different than respecting her as a person. I have always been determined not to stoop to her level, which is very, very hard sometimes, btw, and I have had people ask me why I've never hit her back. I didn't simply because she is my mother. I prefer to take the high road. Lord knows, she's got the low road covered!
I cut her out of my life over a decade ago. I have had the misfortune of seeing/talking to her a couple of times since then, but it's always the same. She tries to suck me back into her drama. It never works anymore.