I actually have in my contracts "excessive drainage" as well. I am a "big time" germ freak! and ALL my parents know it, that IS and has been one area I absolutely will not budge. If I have concerns over the childs illness or even their "need to be home with Mommy" I will tell the parent at pick-up or if I have to call them at work. I would see nothing wrong with explaining your concern for her "need for rest" and ask her if she could please keep her home tomorrow and hopefully she will be rested and better by monday. (I would also ask the parent to give a call sometime sunday evening to let you know how she is doing) In my contracts I also state: When a Child is ill, there is no better care than that of a Mommy or Daddy. sometimes thats just what I say: "I think she/he needs a day with Mommy to feel better"