As POA do I have legal authority to prevent a hostile and negative sister from contact with our mother? It's sad to say but she causes constant stress and puts our mother's health at risk. If I have the authority, how can I exercise it? If she wants to contest it, what can she do?
I haven't discussed the issue with Mom. I wouldn't take any action without first doing so.
But how does your mother feel about your desire to cut off access to her daughter?