I agree with your analysis, LL. It seems to me she started last on the Ivermectin and the dosage at that point could have been way off.
Heartbreaking.
there were two cases in NYS where older people on vents were given ivermectin and they got better....whether that is just anecdotal I don't know....but its worth a try....
so sorry for losing one of our own freepers....geez....just terrible.