Which I’m not happy about and neither are my family. I do not want to have anything to do with my mother's money but at the same time I still would like to see what is going in and out of her account. Just to reassure me that all money is accounted for and money that has been lent to nieces is paid back. My sister says I don’t need to see them!! Surely I need to keep my eye on it! My mum is fine with it as she would like to see as well.
At an early point in my mom's dementia I stopped showing mom her bank statements, etc. She just did not understand them and it was very frustrating for her. I chose not to open that can of worms to have one less stressor for me and mom and her hubby.
Relax. Maybe take mom to the bank to check her accounts without POA knowing?
Mom did not need a consult with anyone prior to appointing sis. Leave the dysfunction out of it.
Has your mother asked to see her accounts? Your MOTHER has the right to ask for an accounting; as POA, your sister has the responsibility to keep your mom's finances private.
If your mother is still competent, she can change her POA to someone other than your sister.