No matter what pain you feel, or what wrongs she has done, it's no excuse for you to be a lesser man.
Post of the thread.
To the OP (str8shooter): no matter what hurt you feel, and no matter the feelings you may have that she doesn't deserve the cue / violated the spirit in which the cue was given to her / how you can give that cue a better home...
let her have it. It's not worth the pain you'll experience if you push this. Take that cue back, and watch what happens -- she'll make this an even more miserable experience that what it is now. She has the power, not you.
I went through one of these (a divorce) myself several years ago. Without getting into details, let's just say that I had the power related to the irresponsible actions of my ex, and should I have pushed it, I would've won in court. But my atty at the time gave me sage advice: don't do it. Let it go. While you may win the battle, you'll lose the war -- my life would've been made a living hell. And I look back on this and acknowledge it was the best decision I could've made.
Let it go. Trust those of us who've been there.
Happiness awaits you in other ways that you can't see right now, because tears and short-term frustrations are clouding your vision.
-Sean