Thanks for putting up your query at HealthCareMagic. I understand the cause of your concern and have gone through the details carefully. Your daughter seems to have acute gastroenteritis or food poisoning. It generally occurs when some preformed bacterial toxin enters the body through some food item. It generally resolves on its own in a few days and the cause does not need to be treated. But the loss of salt and water from body may cause dehydration which needs to be managed with priority. Give her frequent sips of ORS. You may give Ondem MD (ondansetron mouth dissolving) tablet 15-30 mins before taking food and that will reduce the throwing up. Giving curd/yogurt could be helpful. Gurgle with lukewarm water will give her throat some relief. It is probably caused due to erosion caused due the gastric acids during her throwing up. She may skip her school for a day or two till she is stable enough to attend her classes. I hope that helps. Feel free to revert back with further queries if any.