I'm ttrying to get my wife's name off our mortgage we haverrecently divorced

That's supposed to be part of the divorce - everything to do with the house. Didn't you have a lawyer?

Essentially the only way to get her off the mortgage is to get the lender to agree. And they probably won't agree unless the debt is paid off (by a re-finance arrangement perhaps). So in divorce cases usually the parties agree that the house will be sold and the ex's split up the proceeds in some way.