Thanks for your query.
Your child is having diarrhea
which is mostly viral in nature and settles in few days.
Most important is to maintain hydration.
Try to give oral rehydration solution sip by sip after each stool try some different flavor.
Give coconut water,lemonade,buttermilk,curd,boiled potato,banana,rice porridge.
Also give lactobaccilus and zinc after consulting your doctor.
Watch for features of dehydration
like decreased urine output/lethargy/refusal of feed and in case you observe any get her evaluated by pediatrician
Wishing your baby good health.