That's just incredibly risky. And considering the last risk you took (marrying this person) didn't work out, then that's not really great odds.

It's one of those things that theoretically could work out OK and I get why you'd both consider it, but I'd just chalk it up to the cost of divorce and make a clean break. Unless you could literally make it a term in the divorce decree that she does pay you or something, but I doubt it's possible and enforcing that would be a massive pain. I'd do what your lawyer suggests, that's why you pay him.