At 1:18 on a Friday, I was kneeling beside my daughter’s cot while she held her lunchbox against her stomach like it could keep somebody out. Her coat was still zipped. The crackers inside were untouched. Nurse Mallory had called me for the third stomachache before pickup, and she had already opened a blue folder on her lap. I knew what was in it before I read a word. I just didn’t know how bad it was yet.