I sent her home. I hope I'm completely wrong, but based on the fever, irritability over the last few days ... oh... and the fact that her older sister had it a few weeks back (which the parents didn't disclose to me, I heard from my other client how has her son in the same class as her) I'm staying on the side of caution.

It's one of those things thats super contagious and it's so hard to control, but it looks bad to the other parents that pick up their kids when they see the mess around the mouth.