I'm glad you finally put your foot down. She seems to be trying to improve. Hate is about anger. By the way, there is no way in the world you should not have the anger that you have. There is also no reason why you should fix it with her.
People choose to for various reasons.
They may not have the anger you have. The decision to fix it is a personal choice. Also, not all abusers are as extreme as your wife. I don't want to reconcile a damn thing with her. If I never saw her again in life it would be to soon.