Mom moved in with me from my sister in Fl. We had the power of attorney prepared but did not make it official until Sept of this year because Mom went in to a nursing home. I signed all of her papers for the home and spoke with the staff there. They called me when Mom wasn't feeling well etc. My sister comes to the home from FL and presents her power of attorney. Both documents were sent to their legal dept. The home took my sister's because they felt Mom's signature on mine didn't match. My traveling notary is furious. What can I do?