I would say something like "it's pointless to talk about what I will or won't do if we divorce, when I don't even want a divorce. And if it ever DID come down to that, I'd probably be following my attorney's advice anyway, so can we please drop this?"
I think the MUCH more telling comment is her "You know how to fix this" comment, and to THAT I would simply say:
"This is YOUR mess; YOU need to fix it."
But again, considering her current state of mind, say both of these as lovingly as possible, give her a quick hug, and get the hell outta there with a "I've gotta go ________ (GAL activity) -- I'll talk to you later.
