My mother is now 86yrs in the early onset of dementia, diagnosed by her medical physician. Her male companion of three years has been named in her will as her "Mental & Medical" caregiver with rights of death if so should occur. He is 91 yrs and he, too has mental and physical challenges, starting. I have been assigned as her POA when her mental abilities should fail. How can I legally provide the best care for them? They are NOT legally married. I need guidance since I live out of state (2800 miles).