Can’t blame ‘em. Who in heck wants to wait aeons to ride the elevator alone? Anybody who can do the stairs should, as they will be as considerate to the people who cannot do them as your sister is.
It’s the ‘many people using a shared space’ that’s the problem.
The stairwell will become just as contaminated as the elevator with everyone using the stairs.
Dense housing is an issue. period.
She is like me, a rule follower, especially when it’s a matter of life and death. She likes the governor too. She was a fed government employee for decades.
I’m kind of amazed that the New Yorkers in my building are more conscientious about the elevator than the Virginians in hers. Well, we have the biggest problem here and it hits close to home for almost everyone. So it does make sense in a way.