My sister cares for my Mom who has dementia and has been living with my mother for 6 years. Since then my mother has been diagnosed with dementia. My sister has power of attorney. I have suspected for 4 years that my sister has been taking mom's money. Over the past 4 months, other relatives have expressed to me their concerns. I have talked to my sister but she will not let me help her and will not let my mother visit me. Recently I saw credit card statements with balances worth thousands of dollars. The purchases are not things for mom. I do not know where to begin to help my mom. I do not have money to hire an attorney. In addition mom is not getting the care she needs emotionally and physically but I can not prove it.