I suppose I can say this - since I no longer have skin in the game - but they aren't divorced because they have to settle the house (because M was under 5 at the time the rules are slightly different). He is due her money
but it all comes down to the fact that when she moved out she demanded that he sell the house, they went back and forward to the solicitor for MONTHS and racked up a huge bill and one day she decided that she didn't care if he sold she just wanted her share. I think she knew the house wouldn't sell for whatever fantasy amount she had in her head and knew P would pay more as he didn't want to sell, it's the only reason she's waiting.