R2C, it's true that it is not working for me. A couple of times I have thought about just leaving but have decided, for now, to stay for my daughter.
You don't leave. You form boundaries around you and D.
Here is one of my boundaries: "When you ask for help in saving your marriage and continually ignore my advice, I feel disrespected. If you continue to ask for advise and ignore my suggestions, I will stop posting to you"
See how it is about how I respond to your behavior? This is what you need to do with W.
You can start little or start big. You choice.
Right now, this is your weak boundary.
"When you do things that are disrespectful to me and our relationship, I ignore your behavior and act happy"
Only you can figure out your boundaries. We can help by sharing ours.
"What is best for my kids is best for me" Amor Fati Link to quotes: https://www.divorcebusting.com/forums/ubbthreads.php?ubb=showflat&Number=2879712