I just went through something the other day reminding me the toll divorce takes on kids. My D14wrote a paper about the devastation of the divorce, her dad remarrying( to his affair partner) and how she was actually suicidal. She and her sister thought up a story and that has been their saving light.
Do everything that you can to protect them, there is going to be enough fallout as it is. Keep being there for them. Work on making you better. Your W is a mess, she isn't going to care what damage she does. Thus the reason to focus on you. Hopefully someday she will pull herself out of the muck, but don't hold your breath.
Hang in there, kat
Me-53(and learning!) S24, S21, D18, D17 Just keep swimming, Just keep swimming. Dory