So, protect yourself. There must be varied and complex dynamics which tie an abusive couple together. Clearly, there are likely to be emotional bonds, fears, shame, guilt, children to care for, money problems, and hope that things will get better. Many abused women are isolated and feel unable to find love again. Some women assume abuse is their lot as a woman, this is an expected part of life.
Some violent men are contrite later and even charmingly seductive.
She may think she deserves the abuse. The abused woman often becomes terrorized and exhausted, feeling totally helpless. No person should ever physically hit, slap, or shove another person, certainly not a supposed loved one. Physical threats should not be made either. The abused becomes so unable to confront the abuser that she can not walk out.