She was battered as a child or her parents abused each other, therefore, she has a higher tolerance for abuse. She feels helpless. She thinks single women are less desirable citizens. She believes that she is responsible for his behavior and reasons that she must find a way to change her behavior in order to alter his. He may exert pressure by threatening to fight back legally if she takes any action against him.
Societal attitudes entertain the idea of women being masochistic and enjoying being beaten.
Some psychiatrists, counselors, etc. say that is seldom the case, and that this charge that women deserve it, enjoy it, or need it are efforts on the part of the male-dominated field of psychology to take that responsibility for his actions off the male and dump them into the lap of women. She may feel guilty, even though she doesn't know why. Leaving may be against her religion. She may have little or no support from her family. She is usually extremely isolated.