I have POA over my brother for Medical and Financial and I will remain as such. He needs 24/7 care and will be moving in with my niece who has agreed to care for him. What I need is to allow her POA over the medical so she can make and receive medical information on his behalf. I do not want any delays in his care because "she's not authorized". My brother is mentally incapacitated due to a serious accident. Can I complete a new POA keeping everything the same, except to add her for the medical decisions? If not, can I complete a limited POA for her with my signature only? Need assistance. Attorney that wrote it does not know???