My mom, with dementia, lives with us. My husband and I will be going to our son's house overnight. We are having our usual caregiver spend the night with her. This is our first overnight trip. I have all her medical information along with Medicare card, etc. in a binder. Do I need to have some sort of letter that allows her, should it be necessary, to take her to the hospital and get updates on her care? Of course, if this should happen, we'd come home, but I'm concerned about admittance, etc.