Sure, you can give someone the power to sign your name [that is what a power of attorney is], especially when it commits you to some duty. What harm is there in her signing. If you agreed to rent the entire house and the daughter lives there, then the owner has broken the lease and you might be entitled to recover some of the rent paid because you got less than you bargained for. But those are two different issues.
Answered on Oct 11th, 2017 at 5:06 AM