My dad was diagnosed with Alzheimer's & Dementia several years ago. Since then my elder sister has been caring for him and allegedly has gained POA. She has yet to provide such documentation and us siblings question whether she is capable of tending to his needs, or if in fact has official POA? I understand that she has sacrificed a lot over the years, but it was always in my Dad's best interest (and late Mother's) that if any sibling needed "help" that the house would always remain open. Since then she has taken "control" of the household and has denied visitation access to other siblings when things were not convenient for her and has turned away Siblings in need. We suspect abuse (unintentinal of course) and neglect for our dad and feel she has no right denying us access to the house, nor feel that she is qualified to provide the care my dad needs during his last years. Recently Hospice care has provided services for my dad, but arguments have escalated between siblings as she continues to manipulate and control household access and visitation. We feel that she is going against my late mother's wishes and my dad (who can't fend for himself), but ultimately all we want is to have a peaceful environment visitations and enjoy my dad's final years. We collectively want to intervene and have my Elder sister's (alleged) POA reversed.