My mother executed a will in July 1988 in NYC. She became incompetent due to dementia and Alzheimer's disease in July 2008. I was DPOA in 2008. Mom didnt revoke my DPOA but my sister got POA in 2009. Mom died in April 2012. My sister cleaned out whatever monies was in Mom's bank account since it was not longer in joint with me as it was since 1978 but in a social security representative payee account. I retained counsel in SC to probate the property in Mom's 1988 will. I was informed that my sister has retained counsel and presented a more recent will to a lawyer in SC. Mom didn't know where she was living much less have the ability to execute a new will.