I am POA of my mother who is on MA and EW. She is still using a credit card and still is writing checks. She has given me permission to pay her bills because she has very low vision. I have done this for a number of years but now she is a friend writing out checks and using her credit card. I need advice on how to stop her from depleting her funds. She was always so careful but the last month has been hard because she refuses to listen. She is 96 years old. Will I personally have to foot these bills? Would it be wise to stop her credit card spending by closing her credit card account or lowering the amount she can spend? Can I do that as POA?