All I can say is I hope someone works him over as much as he did her. Idiots like this only understand violence. I know I should have more fluffy feelings on the value of redemption but honestly once an abuser ALWAYS an abuser. One day (not likely) he might learn how to not hit women but he will always demean, intimidate, and break anyone he's involved with.
Obviously, she's pretty messed up in the head herself. I hope she gets counseling and learns to seek out non-psychos......I'm not going to hold my breath though. I've seen it way too many times.