My mom is rehabbing in a nursing home. I believe my sister who is apparently acting a DPOA (my other sister and I have not been formally notified by my dad that this is the case and there is a severe lack of communication or willingness to share info about my mothers condiditon). I am aware that there are citations against the facility my mom is currently in, having to do with not keeping accurate records of patients' meds. I know that my mom has suddenly been given morphine due to "pain". My mom indicates to me that she only has minimal pain. I am fearful about the level of competence at this nh and my sister is abusing her power as DPOA to further divide the family. Can she override my moms expressed wishes to access her medical records at the nh?