My father lives in a locked memory care facility. He has Major Frontotemporal Neurocognitive Disorder. His medical records say he needs 24/7 supervision, needs to be in a locked facility, and cannot make decisions. My sister took my father out of the facility one day, and drove him to the courthouse. Sister filled out paperwork to revoke my POA, and told my father to sign it, which he did. Now, my sister has POA, and plans to move father out of the facility and into her home without 24 hour care. Do I have any recourse?