My father is being denied visitations with his mother by my cousin, who is her power of attorney. She says he will be arrested for trespassing, he will not be allowed at her funeral and he will not be notified when she dies. This has been going on for 4 years and it all started with my sister refusing to adopt her daughter out to my cousin and she also wanted my other sister's SSI checks in return for visitation rights. Is this legal?