My Mom (85) has early stages of dementia. I have an appointment with the lawyer since last week she said that it would be a good idea. When I told her about the appointment, she sees no need since my name is on the checking account and I can pay the bills if needed. She has an old durable healthcare POA from another state that states my Dad (who has passed away) has the POA and I am the first alternate. Please advise me.