She supposedly was able to tear up her pre-nuptial after the stormy Davis outing and get a new far better one. She has rarely spent any time with trump since. She has been recorded swatting his hand away when he tried to grab hers as the disembarked from air Force one on official visits.

She knows she is going to get paid. She seems to want to have nothing to do with him. She hasn't run anything of theirs, and she won't start now.

I doubt she'd do anything for him once he's in jail. It's no secret that she is only with him for his money. If he's in jail, she is free to do anything she wants and has, theoretically, full control over the money. For her it's the second best case scenario (with the best case being that he dies and she inherits everything).