I have Medical and Durable POA for my younger sister. My mother is the primary and I am the secondary - my mom is not "fit" to act in this matter and has ceded that responsibility to me. I do get guidance from her as she used to be a darn good nurse. My niece vanished from her mother's (my sister's) life and decided to become a part of it when my sister became paralysed. I am very happy this happened. Slowly, I have given my niece more responsibility with my sister including getting her to various appointments. She missed some appts and upset some folks due to "I was sick - I was up all night sick, etc." In addition my ex-brother in law has started being the person that is talking to me about things instead of my adult niece speaking to me. They changed appointments for a monthly treatment and the facility allowed this. I realized that I had ceded too much responsibility to her when it was clear that I did not trust her enough for this. I have contacted the facilities involved to see if they have the Medical POA on file and will be sending it to them. I don't want this to go the way it is going, but I don't know what else to do. Some may say I am being controlling, but I am trying to keep my sister from missing any more of her appointments. She will loose the hippotherapy if she misses. I just don't know how to deal with this. My niece and her mother were estranged for many years. My niece and I were estranged for many years. My ex-brother in law pushed me on the phone as to "why" I am taking away the schedule change of them taking her to her monthly appointment and putting it back on the facility of whom I had previously arranged. He forced me to say "I don't completely trust her". I feel horrible. I don't know what to do from here.