Thank you for your query on Healthcare Magic.
Your child is having Gastroenteritis
mostly due to a virus.
The mainstay of treatment is to maintain hydration by giving oral rehydration solutions like Pedialyte
If there are still vomitings, you can give anti emetic like ondansetron
in prescribed dosage.
Monitor her hydration by her urine output, activity, and skin turgor.
But she needs physical examination by her Pediatrician
to assess the hydration status.
Therefore I advise you to consult the Pediatrician for the examination and for specific treatment.
Hope I have answered your query.