I just don't think Anisa is going to divorce Ian. I don't see it happening. She's already broken him down, he's her whipping boy. He does whatever she wants, makes ruinous financial decisions at her whim, goes out of his way so she can see her crushes, he's pathetic. She is not jumping ship anytime soon unless she can find a man who is much more wealthy than Ian. That's not happening. Ian was a once in a lifetime opportunity. A millionaire with no street smarts or real dating experience, he absolutely did not know his worth at the time they started dating. She's never finding that in her 30s. Men in their 30s with money can already get much better than her, much less be manipulated by her.
There's one situation that might lead to Anisa breaking up with him and that's if he gets on the bad side of her insane mother while he's living there. This is a possibility that is not worth overlooking. Anisa will definitely side with her mother against Ian if it comes down to it.