T on top of how horrible all of this is for your D5 and the rest of the family the other thing that I find sad is that up until this incident you were still standing. Your XH really doesn't have a clue how lucky he was to have you in his life. FWIW if it were me I would have stopped standing too (although in my own case I did that when OW got pregnant).
Me 43 XH 45 M 2.7.88 Divorce 7.10.09 Kids D20,S17 & D15