My parents hired a lady to come in and take care of them. Since she is their for them and taking care of them they have become dependent on her for everything. My Dad was hospitalized and the family was not notified. This attitude about not letting the family know what is going on seem strange to me. My parent have put all of their trust in this caregiver and have stop telling or discussing matters with us that parent and children normally would discuss. When I go to my parents home it is like I am a visitor not family. My parents have made this caregiver their POA. I am concerned that this person could take advantage of them. Is it legal for a caregiver to be the POA.
From what you wrote I am seeing so many red flags. Professional, honest home health aides don't insinuate themselves into the lives of the people they are caring for. It's also totally inappropriate for this aide to be POA for your parents. And the thing that jumped out at me is that this aide is isolating your parents. You and your siblings need to get on this ASAP. Something is very wrong. And since this aide has POA she has the power to take your parents for everything they're worth.
The caregiver could either be a really good person, trying to help your folks out or she could be an opportunist trying to take advantage of the situation. If you're concerned, you'd better spend more time with your folks and the caregiver to find out what is going on.
Also find out who has POA for property. If the caregiver is trying to take advantage, she'd want that kind of POA, as it would give her access to their money and property. If that's happened, I'd be concerned.
Have you any evidence that this person is taking advantage of them? Have you asked your parents why they don't discuss issues with you?