J.S.
Waaaait.... she got up during the night throwing up the past couple of nights but you sent her to school anyway? You do know that you're supposed to keep your child home until they've been fever free, diarrhea free, and vomit free without the aid of medications for a minimum of a full 24 hours right? If she vomited last night your daughter should have been home and in best resting. Same thing yesterday.
It sounds like she has an intestinal virus that has to run its course.