if she is on the house mortgage, is she paying half of the mortgage and half of the house utilities and house property tax, etc. If she doesn't want to be in a relationship with you and just wants to ride this out til the day of the divorce, treat her like a room mate, list all the expenses and have her pay half, if she doesn't like it, tell her she can leave, nothing forces YOU to pay for everything, just assume that 50% of this financial responsibility is yours regardless of any words that come out of her mouth. When she gets her own place, she'll have to pay her own bills, she might as well start now, no time like the present.
