Just as some of you had suspected, my mom had given my sister her credit card for groceries and my sister had been using it to pay her own bills as well.
Unbelievable! She must also have her Social Security Nbr. You may be on time to do damage control or prevent it: Check that she did not request any kind of loan or credit cards using your Mom's numbers. Take firm steps to prevent her having access to your Mom's assets in the future.
I'm glad you are figuring things to take care of your Mom.
G