I go to all of my MIL's appointments with her. She is in independent living with extra home-health support. She has been hospitalized twice for kidney-failure brought on by dehydration. She is currently physically healthy, but recently had a mammogram to check out a breast lump. While at the radiologist, I realized that if she had been diagnosed with cancer, treatment may not have been the best option at this point (and she still could make the decision at this point.) I want to have a conversation about how she would make decisions about things like dialysis or chemo, not just DNRs. (We are both her designated POA, but I take care of her health for the most part.) What resources should I seek to help me with this conversation?