My fiancé that I have been living with for the past 8 months and his sister's name is on house and he was in car accident and is needing rehab he wanted me to have power of attorney and told me that was my home. It was bought with his money but sister had to sign on it because of his credit. Now she is telling me to find another place to live. What are my rights because he wants me there but she tries to control him.