My point is why not stay home if you think you need that level of protection to go out in public? The women was with another person so presumably that other person could have done the shopping.
A lot of the medical experts think that there have been many cases of COVID-19 where people were never tested which would reduce the fatality percentage. A round of antibody testing in New York City showed that around 20% have had COVID-19. Here in Minnesota about 80% of the deaths have been 75 and above. Personally, I wear a mask in public and am careful to keep my six feet, but I still go to stores if I need something. I am working on a big project that means going to Menards and Home Depot several times per week. I had to go to five different Menards stores to get five pieces of trim because the stock had been wiped out. Most stores just had a few pieces of firewood left. I finally got smart and checked the Menards website and found a store that showed 50 pieces in stock and was able to get five nice pieces of trim.