Some people will never get it. He seems to want to continue to blame you for all of his problems. I hope your son didn't cave, I mean why should he, he is an adult.
As long as you keep working towards your inner peace I am sure things will improve in your life. I suppose I am lucky that ex is for the most part wrapped up in his fiancee.(Since I can't prove that they filed a complaint against me).
Do you feel good keeping the connection with your former in-laws? If so then continue to be their "daughter" and "sister". Can't believe Easter is only a couple of weeks away.
Hugs to you. kat
Me-53(and learning!) S24, S21, D18, D17 Just keep swimming, Just keep swimming. Dory