Just called to see why I wanted that info. I told I needed it for info I was preparing for my atty because I was doing the background work that needed to be done so when I was ready to begin the process I had everything in order. Told her honestly that I don't know when that will be, but that I wanted to be prepared when the day came.
OK, the first part of this likely gave her a nice jolt of reality, but then you "rescued"/minimized with the "told her honestly that I don't know when that will be" part.
DON'T DO THAT. Let her feel the consequences of her decisions. For lack of a better term, LET HER SQUIRM.
Other than that, you handled it really well. I know, this sucks. I can hear the sadness in your posts. I know it's trite, but there's a truism around the MLC, WAS and Infidelity forums, and it is this: