Was he physically abusive? I don't remember seeing that. If that was the case, then he needs to earn her respect. Not the other way around.
If I recall correctly, he beat her with a belt once.
And yes, he needs to be trying to convince her to save the marriage, not the other way around. abq needs to reach down and feel her own value and show self-respect. (BTW, she is a drop-dead gorgeous young woman.)