My father passed away 18 years ago when I was 17 years old. After his passing, I never kept in touch with my fathers side of the family and they never kept in touch with me. Just yesterday, I received a phone call from a aunt from my father side informing me that my grandmother passed away. In her Will, she still had my father listed. My aunt explained that my grandmother always intended to remove my father from the Will but never got around to do so. My aunt asked if I can sign a letter they wrote up that states that I agree to give up any inheritance that I would receive on behalf of my father. I am not sure what to do.