My 88 year old mother is having problems remembering what day it is. She will sleep for 2 hours and wake up thinking it's the next day. She sends birthday cards to the same grandchild more than once in the same month. We suspect that she may be getting confused about money matters. She is under treatment for a thyroid problem and she has always had problems with insomnia. She still drives and so far has no problems with that. Where do I begin with getting her evaluated/treated?