I am the executor and have POA for my mother. My father who passed away a year ago originally co-signed for my niece's school loans, but recently she had to re-apply and requested my mothers DL & SS#'s and was told it was for reference for her school. I suspect that my niece thru her mothers (my sister) guidance forged my mothers name. Im not sure how to handle without causing even more family issues that have gone on since my fathers death. I don't want my mothers estate to be held responsible if she should default on her loans.