If she says she won't move and is firm on not moving...
Then YOU move out. Get your ducks in a row. Staying and living together is a no no when you want to show them you are moving on down the road and letting go.
i hate to jump in on this and put a negative spin on it. but is there any legal implications on moving out? can the spouse claim 'abandonment' and then take the entire house if the d goes through?