[muscle_woman]

My bf shared a house with his ex...he bought the house so his son could live with him (this child does not belong to her) and she lived with him for about four years (but the house in question was only lived in for about a year and a half). He bought the house, his name is solely on the deed and mortgage. They both filed as single on their taxes. She borrowed about 11k a year and a half ago and spent $7500 on new kitchen cabinets. The house is worth less than the mortgage as the market has decreased (in Alberta) by about 20 thousand. He left and continued to pay half the mortgage. He has since asked her to leave and she agreed to a buyout for compensation for her renos. She accepted $5500, but since is refusing to leave the property, now stating she wants $9000 and will not exit the premises until she gets it. She also says she put a lien on the mortgage. Is this possible? Can he give her notice to get out and does he have to give her anything at all? What exactly do we have to do do get her out?? Please help!