You do not want to go to Retrouvaille with her RIGHT NOW! It would be a complete waste of time and money. It is for people who are actively working on their marriage. You are not because she has checked out!
You busted her again with with another OM who happens to be your friend. WTF?
Why, why, why do you feel you deserve to be treated this way?
Your W completely understands what she is doing and she doesn't care because she doesn't respect you and she doesn't respect you mainly because you don't respect yourself.
Sandi has stated it a million times on this board that a woman can not love a man she doesn't respect.
How can you get your respect back? Let her go, walk away and never look back until she comes to you and EARNS another chance with you.