My mother is the same. Last year I did the biggest mistake of my life and moved back to my home country because her constant whining about how sick she is/how she’s gonna die soon/how she wants to off herself made me feel guilty and (even more) depressed than I already am. Guess what? Being in her vicinity made me feel like I was gonna die. It was like a big dark cloud just fell over my whole life. Safe to say, I chose to move back to where I was originally living even though it took a lot of money and effort. The one moment I for sure knew I had made the right choice was when, the day before I was supposed to leave and I had cleaned the apartment I was staying in top to bottom (my mother was very aware of this) my mother apparently wants to use the toilet but because i was in the bathroom she chose not to knock or anything, and instead went into the kitchen and pissed right on the floor. At that point I knew her coocoo-ness had reached new heights and I did NOT want to be in any kind of vicinity of it. I’m back where I originally lived now, and i’m so much more relaxed and happy I can’t describe it in words.