(This one interests me)
But on what basis would the ruling be appealed?
It wouldn't be an "appeal". It would be a motion to modify.
Its impossible that the daughter in law is appealing anything at this point, because the period to appeal is LONG past. The daughter in law could only be filing a motion to modify.
Bottom line, the house isn't selling. The daughter in law apparently cannot afford the house payments any longer.
Something is going to have to give here. Since we are not privy to all of the details of the property settlement its hard to know what should "give". If the house was the only real asset then clearly the problem is the house and its fair market value.
If there were other assets involved then a complete "re-do" of the property settlement might be in order.
However, based on what I have been seeing out there, in the "world", I suspect this was a DIY divorce, that the parties naively placed an unrealistic value on the house, and that the house was the only significant asset.
I could be wrong...but nevertheless, if the house isn't selling, it isn't selling. If it goes into foreclosure, everybody's credit is totalled.
Unless the daughter in law has significant assets besides the house, if OP's son doesn't cooperate with a sale, OP's son could end up without the 30k AND with his credit tanked.
Sure, he might get a ruling that she owes him the 30k anyway, but it may be next to impossible to collect.