hi madam , your daughter most likely has gastroenteritis which is the infection of the intestine usually caused by a virus and doesn t warrant antibiotic therapy . antipyretics use when you feel that she is febrile yes she may not want food because she has nausea, but fluid therapy is very important , includes milk , ORS from pharmacy, soaps, but do not give her jauces it will make her diarrhoea whose. take her to hospital if she is dehydrated and that is noticed by : dry lips, decreased urination, drowsy and increase sleepiness. I hope this is helpful