She's going overboard, but shaming other people for do what they feel they personally need to in order to feel safe is cunty behaviour. I don't care if you want to wear an NBC suit just as long as you're not asking me to as well.
I don't think there's anything wrong with shaming her.
Now to be fair I don't know her situation, so if she has like stage 4 cancer or a dying kid or something then she's not being completely unreasonable.
But if she's a normal ish person in a normal ish situation. The behavior she is exhibiting is unquestionably pure freaking mental illness. When HCWs go onto a room taking care of a covid positive person we don't even go that freaking overboard.
And I'm not sure why she opted to list "natural immunity".
While technically true, I don't know if getting Covid-19 is the best strategy to avoid getting Covid-19