My name is on the mortgage and a friend is in the deed as tennant in common. She won't agree to sell. I can't keep oaying for teo homes...what option

You cannot sell your half as no one would buy half a house, and no one would buy something with a mortgage and you cannot pay off the mortgage at the sale.  As long as you pay the mortgage your credit rating is not affected by a suit.  Your only option is a partition action.