My stepmother, 82, has dementia. Her daughter (mystepsister) has power of attorney. POA has numerous unpaid bills for which she is responsible, in the tens of thousands of dollars. I live in a different state than they. I suspect that my stepmother is being financially exploited by her daughter and see a need to step in, but do not know what to do or how to proceed. I have limited income and cannot afford expensive legal assistance. What else can I do to ensure that my stepmother is not financially exploited?