My question involves a mortgage in the state of: Pennsylvania. My father bought a house in 2011 and had his then girlfriend added to the deed; the deed describes their ownership as a joint tenancy with right of survivorship. I've been reading about what this means and I wanted to know whether or not the fact that the mortgage, which was used to purchase the property and is only in my father's name, destroys the joint tenancy? Also, she hasn't paid for anything...the mortgage, maintenance costs or property taxes. Is she legally responsible for these things and if so how would we go about getting her to pay? Quitclaim is not an option nor is partition. Thanks.

