my W doesn't regret her affair

[Gnosis]

Things haven't exactly worked out the way I wanted.

Um... haven't heard the fat lady farting yet...

she said my behavior has convinced her once and for all that she's done with me.

BS on the behavior. She's twisting this around to guilt you for her decisions. This is why she wanted to delay and have "a peaceful holiday" before. It's called blowing smoke up your a$$.

She wants to get the separation done, and this morning she gave me a proposal which includes her taking more care of the kids, getting more money from me,

Yeah, right... talk to my lawyer.

and here's the kicker, she says she's going to be spending time abroad, and she's going to take the kids with her, for up to 3 weeks at a time.

Over your dead body! If I'm mistaken you can put in legal papers to prevent her from doing this. Your excuse: "You're afraid she won't come back"... i.e. if she does this she faces charges of kidnapping. Look this up. Speak to your L.

She is not bluffing.

Neither are you!

I think when I "dumped" her, she went running back to OM, and is now convinced he is where her future lies.

BULLSHIRT!! The OM has always been there... he never left her thoughts. If I'm not mistaken, isn't this around the same "mating season" when she went over there the last time?

I don't know if my actions caused this, or merely exposed what she wanted all along,

Probably what she was going for all along.

but I am a wreck.

Words are usually empty, and I'm not belittling the anguish you feel, but pull yourself together. You can handle it.