My friend was the sole medical power of attorney for her 95 year old great grandmother, Her grandmother was financial power of attorney. She learned today that her grandmother had herself added as medical power or attorney as well. Can this be done without her permission and is there a way to have her removed?
Your brothers - whoops, did I type 'bothers' just then? Freudian typo?? - can machinate to their hearts' content: as long as she's competent this is your mother's decision, and once she is no longer competent POA can't be changed.
Don't get paranoid, by the way. I don't mean you sound it, it's just that I quite often felt it when my siblings were getting on my nerves.
I suspect of anyone was removed in any capacity they would be informed, but I don't know for sure. For myself I was sole POA and then my mother wanted it to be dual with my sis and I both. I refused that arrangement and said if she wanted my sis on as co POA, then I would withdraw It would have been a nightmare. So she listed sis as backup if I could or would not do the job. I would check with the attorney who drew up the documents to see what the terms are.