Thank you for your query.
She is suffering from some type of gastritis
.This usually happens after she has taken food from outside or has a acute exercerbation of pre existing gastritis. Give her a antiemetic like ondansetron
and some probiotics.Give her a lot of fluids and keep her at home. If she persists to have vomiting
and seems to be dehydrated consult a physician.Hope this answers your query.Wishing your child a speedy recovery.Have a nice day.