Then why was she on the overnight(s) trip with him? Don't forget, he took her. Sorry, but it's incredibly rude for him to marginalize JA by saying to the waitress "I'm not with her" (paraphrase). See, that's the point about part of the abuse the defense is I believe, trying to build a foundation for: that he humiliated her and marginalized her.
And yes I know, being rude is not a reason to kill someone. I know. She was good enough to boff when he was horny, but not good enough to treat decently. That's where the defense is headed with all this carp testimony, and it's a slow road not leading to a self defense justification. But come on, he was damned rude to her. He just was. IMO.