I have an elderly grandmother who is 86 years old and who has dementia that up until now my mom has been responsible for her. She has power of attorney and is the appointment caregiver. Mom is sick and dying from cancer and is mostly in a coma form. She never got to sign the papers over to me. What happens to my grandma. She has dementia and can barely sign her name and I doubt they would deem her sound of mind enough to do it anyway even if i could pull her signing her name off.