Thank you for your query,
The causes for loose motions in your child are :
1. Parenteral diarrhea, in which loose motions develop due to infection anywhere like tonsillitis
2. Antibiotic associated, which is common with Augmentin
Nothing to worry, it is looking like antibiotic associated diarrhea.
Try to maintain her hydration by giving sips of oral rehydration solutions and monitor her hydration.
like Saccharomyces or lactobacillus
will help to restore normal protective gut flora
and decrease loose stools.
You can give curd and yogurt as they contain probiotics.
So consult your doctor for probiotic prescription.
Hope I have answered your query.