I know exactly what you're going through. My W and I are supposed to go to Retrouvaille Oct 16-18. Today, I just keep telling myself it's only another 6 more weeks...I can do it. Sara's and Sandi's advice is to be nice and cool. Don't do anything that can potentially make the situation worse. I can really tell my W is really starting to pull away. This may be the week she files for divorce...we'll see. If my W remains committed to going to Retro, it's for "last resort" purposes to ease her guilt about splitting up our family...just like your W.
Good luck and hang in there. Atleast your W put on her wedding ring. My W is starting to do some "house-cleaning" and I've noticed some "wedding keepsakes" in the trash. I'm feeling it like a 1-2 punch also.
Thanks, LFH
ME: 38 W: 35 D2.5 and S5 Married 12 years Separated (same house, different rooms) INILWYAM by W: 4/16/2009 The day W requested a D: 4/17/2009