Thanks for your query,
Your child is having fever
with pain abdomen which could be viral of bacterial in nature.
I suggest you to give some anti emetic like domperidone
as per dosage and mefenemic acid for fever and pain relief.
Give her plenty of fluids and simple bland diet so as to maintain hydration and nutrition.
If symptoms persist get her examined by pediatrician
as she may need some tests like CBC,Urine examination.
Wishing your child good health.