My mother has dementia & my father died 12 mths ago. My father died 14 months ago and my sister was on my parents checking account. She never contacted his pension with a death certificate and she has been collecting his pension for the last 14 months signing his name on the checks sent to my parent's address. I found out last month, finally putting my mom in a nursing home and becoming her power of attorney. My mother has last stages of dementia and has no recollection of anything. There is no money left in the checking account, sister took everything. Now the pension company of course wants the pension money returned that was sent to my father/mother in the last 14 months. What should I do since I am my mother's power of attorney. My sister will not payback the pension money said she needed for care for my mom. Help I do not want to be responsible for over $5,000 in repayment since I had no clue this was happening.