GrandmaClampet please don't feel bad, they will understand eventually. The amount of information and it's transparency is shocking from our government and media, it's either all panic or nothing.
My parents keep wanting to come and see us, or look after the kids, particularly on mother's day, but my Dad has so many risk factors and the kids are most likely to pass it on without anyone knowing that I am encouraging them to stay away. Mother's Day is an arbitrary date, I can work extra hours from home so I can cover childcare. I would far rather this and both of them be around for next mother's and father's day