Would she still have had a job if she did that? Did she have enough paid leave that she could do that without having to do without groceries this week?
This isn't about personal responsibility at this point. It is about a system that demands people go to work sick and leverages serious consequences if they don't. This is allergy season. Most people wouldn't have a job if they stayed home at the first sign of a cough or sore throat. If we want that to change, if we want to demand everyone stay home for a huge range of symptoms (early signs of the virus include not just fever and cough but sore throat, unexplained rash, fatigue, muscle aches, headache, chills, diarrhea), we need to demand the system change somehow to accommodate that. And we need to be prepared for the fact that this would exclude a lot of people from the workforce on a seasonal or episodic basis because they suffer from allergies or other chronic conditions that can mimic some of the symptoms of COVID19.