I am sorry, dont know what to advice. Usually here we say "dont save the WAS", and I agree with that big time so that they can feel the consequences, in your case, I am not sure. What is your gut feeling telling you? Would she TELL you she is worried?
She told me she is worried, I just don't know how far to go. I want to take the high road, stay in the game, out last him and let him blow it. I just don't know how far I should go before I'm working against myself.
I don't think he'll blow it if he goes away alone with her...think about it.