Not to sound harsh but she was 100 well past expected life for most of us. So anything/everything can/will kill you at that age.
Steven Crowder has been hammering this point for a while now. The numbers have shown pretty clearly that the population the most at risk of dying from COVID, are several years older than the average life expectancy.
As as for putting infected people into nursing homes ...
[video=youtube_share;_10hPBYSfC4]http://youtu.be/_10hPBYSfC4[/video]