Thank you for your query on Healthcare Magic.
It seems your child is having mild diarrhea
due to some contamination of feeds.
Nothing to worry.
Monitor and maintain her hydration.
Give sips of oral rehydration fluids like Pedialyte
to maintain her hydration.
Undigested vegetable matter is seen in infants stool and it is normal, and during diarrhea the rapid passage in gut leads to undigested food particles.
Consult your Pediatrician
for the assessment of the child and for specific treatment.
Hope I have answered your query.