what occurs with these women is what is known as "the cycle" of abuse. During the passion stage, everything seems wonderful and they are loved unlike they have ever been in their lives. Abusers start the abuse slowly.. sometimes even years go by in between the abusive events.
The women think things like, "well, he is usually so loving, maybe I shouldn't have said what I did, or did what I did to make him that mad".
Abusive relationships also have what they call, "the honeymoon stage": where the abuser arrives with flowers, gifts, and cries while saying "I'm sorry, I love you so much" and usually states that he will never batter again.
If the cycle of abuse is not broken, eventually, the abuse becomes a way of life. The victim eventually finds it is easier to avoid the abuse if they do not cause arguments or anything that will be a trigger for more abuse. They realize if they leave or try to walk out, the abuser will probably follow them. That is when most violent relationships become deadly. It then becomes a "survival" only phase of the victim's life.
People who have never been in a violent relationship can never understand the mind-frame of those who have.