Ok, I'm no vet, but I've made a lot of mistakes in my situation. Slow down. Seriously, slow down. It's only been 3 weeks since Monday, not even a month. If you have decided that you're going to stand for your marriage and are going to try to use Divorce Busting to make this happen, awesome.
Read the books, read the forums. I wish I'd been here as early as you.
Ok. Get on the 180s. Make the priorities the ones that address issues she has pointed out having a problem with. Try to remember the guy she fell in love with.
GAL. It'll help you maintain patience.
Don't be so helpful to her in making the divorce happen. Let her face the reality she's creating on her own.
Me: 34 W:33 T: 10 M: 6 S: 6 D: 5 BD: 5/14 Still together(ish) Not giving up: 7/14 D talk has slowed, a lot. Gradually working on things together. Still separate bedrooms. Slow and Steady wins the race.