Revocation of Durable Power of Attorney I was recently assigned Durable Power…

Revocation of Durable Power of Attorney
I was recently assigned Durable Power of Attorney for my Mother. My understanding is that this not only gives me the authority to manage her finances, but also the responsibility to pay her obligations if she cannot. She has continually disregarded my advice and will likely, at some point in the future, be unable to meet her financial obligations. I have sibling(s) who feel that I am trying to ”cut them out”, so I have hesitated to take complete control of her finances. My question is…can I, as the agent, have the DPOA revoked or must the revocation be initiated by my mother, the principle?