I think you're on the right track. Put her in the position of having to make a real choice that has undeniable consequences.
I would ignore the multiple texts. I wouldn't be too put out by details (though I have been). At least don't let it seem that you are. Calm, cool, collected.
She seems like she might cave. That's not a promise, just her attitude seems to be that of a kid whose parents just called his/her bluff.
~Mark
Me: 38 W: 34 Together: 9yrs 1st M: may '03 1st D: april '08 1st bomb: june '08 remarried: oct '08 2nd bomb: aug '09 --(W asked for D one week into 3 mo. trial separation which was meant to save our M)