As it is, she is legally entitled to half of the equity. The courts would decide if she is entitled to more or all, but thats in extreme circumstances. She can't personally force the sale, however the court would during the divorce proceedings.
I called W to let her know the outcome of my trip to the mortgage lenders today..I told her I just can't get that sort of money & told her the max that I could have. Suprise suprise, that is not enough for her & I have to now look into selling my home.