Unfortunately, I am not sure that it is fair to ask her to keep her child home unless THE CHILD is the one with all the symptoms. Booo.
I have had parents drop off when they are staying home sick. And as much as I sort of shuddered, I understood. Perhaps if they are not at home with sickie mommy, they are less likely to catch it. And usually mom/dad picks up a little earlier that day, at least.
It would be nice to be able to take my kids someplace when I am sick.....