I am not sure how to use my Power of Attorney.

My Mother recently moved into our home from another State. She is 84, and cannot care for herself or any of her affairs. My Father passed away twelve years ago, and my problem is that I cannot get my Mother to change anything from the way he had it set-up mainly because she does not understand such things, therefore, she just chooses to leave things as they were. I am her POA. My problem is that she has not changed any of her banking, credit cards, or any other financial obligations, etc., to an institution in the state she now resides in. I have tried to convince her that we need to move these things closer to us so I can manage them easier for her, but she refuses to even discuss it. I have been advised to use my POA to make the necessary changes, however, I am not sure how to write the necessary corespondence to present them with my POA to accomplsh these tasks in an effecient manner. Most of her financial institutions are over a thousand miles away and in a very small town institution, and I know how word spreads around in such a small town. I am torn between doing what my Mother wants, but at the same time knowing that I need to make these necessary changes because she is incompetent, and if I do not do this, it will cause problems later down the line. I guess what I need is a sample correspondence letter to present my POA to her financial institutions as mentioned above, or any other advise you can give to give me peace of mind and know that I am doing the right thing. Thank You,