My wife came home 'pleasant' and talking about how moving to a certain area of the country would change things, how it would be farther from work but such a change to our lives that it would be good. She talked about the future, kids etc.
This is why I do not believe she is seriously waiting to exit. I think she is simply very skeptical about any changes at home, and waiting to see if they last. I would also point out that this does not excuse her actions - she still needs to work on herself - but it is hope for your marriage. When a person is talking outside the fog, you get a lot more truth...