So I am ready to just straight out ask her if she has any hope for this M.
If you ask her this, be ready to hear her say "no". I'd advise you not to ask her that. If your goal is to save the M, don't ask.
A lot of times, men will put pressure on the W b/c he is tired and wants her to give him encouragement. You want others to do the work, but you have to do it.....not others, KWIM?
If she told you "yes", then you would think that the MR should be back to normal in a few hours.....and it just doesn't work that way.
If she and OM are still emailing, then the EA is not over. They are just being careful right now.
That's why it doesn't work for the OM's W to do the work (like telling your W NC with her H). And you, you were hoping that would be the end to it, but it has to be the one of the two people in the A that ends it. Your W did not take what OM's W said as any kind of threat or pressure b/c OM has done nothing to stop.
So what are you expecting if you expose? Do you think it will cause your W to fall into your arms? Do you think OM will run?
It may or may not end the A, but will it mend your M? That is what you need to consider.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!