My mother left Florida for a short stay with my sister in NY. During the stay, my sister there in NY filed for and received a POA. At this point, my sister in Florida had already a POA many years before our mother had Alzheimer's. My sister took it upon herself to control or mother's finances, letting her house in Florida foreclose, and subsequently placing her in a nursing home without our knowledge or input. Do we have any legal recourse to get her back home to Florida with my sister and me, and in our home?