I hold the dpoa for my mother. She has several health issues both physical and mental ( bipolar ). She lives in assisted living because she physically cannot live alone. She does not take her phyc meds as prescribed and becomes highly agitated and paranoid. She accuses me of all sorts of things, from having an affair with the nurse to not taking her out to dinner like a good son should. She told me she was canceling my poa because she is mad at me. What can she really do to follow thru with this ? Doesnt she need to file papers and have it notarized to make it effective? Or is this just a threat because she is mad.