All those things you talked about in the beginning of this mess - responsibility to your family, your home, you shared history, your D's!!!
Don't give up. She hasn't necessarily given up. She's looking for you to LEAD the family towards being together, not apart. She's feeling down, you're feeling down, and this isn't a good mix.
Go read "Hold on to your N.U.T.s" if possible. Set some boundaries. Man up.
Your family is worth a fighting chance, today. I know you're not optimistic, but that's OK. Sh*t happens. Pick up your family and carry them to the next hurdle.
----"Et tu, Brute?"---- me:28 W:24 S4 T:6 M:4 EA Exposed: 5/21/10 Bomb: 6/20/10 (Father's Day) NC w/ OM: 7/10/10 W moved out 8/21/10 http://bit.ly/aOrZne - My sitch