I am so sorry that your Mother's Day turned out that way. Good for you for standing your ground with H, all while still processing so much difficult information from the night before. Were you able to give your older S some ideas of how to set boundaries with OW? The way she is pulling him in to the situation is unacceptable. Your S shouldn't be put in that situation, but since your H obviously isn't stepping up to protect him from that, he might need some tools for how to do that for himself.
I hope you managed to do some nice things for yourself yesterday and that today brings you some peace of mind and strength.
