I am my brothers guardian. My sister was in disagreement with this decision. My brother let me know that she wouldn't take him on outings any longer, from the nursing home, as she questioned her liability. I sent her a note saying that her relationship was valued and she in no way liable. She responded by letting me know that I didn't need to contact her anymore. Then, she sends me a form to sign releasing her and or her family of liability, hold harmless, that I would not sue or attempt financial gain so she could take him on outings. It appears to be a glorified legaleaze field trip form. Please advise.