Dr note is a great idea, and require it from now on, although I have found in the past, I seem to have higher standards than some dr's in town. You need to set things straight with this chick and after you find someone to take the place of her two kids, send her down the road. People like this drive me nuts! and I have had my fair share, they show NO respect and USE YOU at every turn. She to top it off, clearly has no morals if she will lie to you repeatedly. Fill the spot quick but until them? send the kids home until 48 hrs pass with no loose stools or other symptoms and a dr note. I have added to my contracts a "sick child fee"...if any child comes down with an illness while in my care fever, vomit, diahreah or any other contagious symptom, they must pick up with in 30 minutes (I live in the country so I allow for travel) and have 20$ in hand at pick-up. Sick of being pushed around by people who just "have to get to work" and will lie to get there.