Hi...based on the history u have provided...seems like she is having URTI...most probably a viral infection...since she has no travel history or history of contact with a person with recent travel history...it is mostly a common viral infection..
Next Steps
syp.alex 5ml twice daily, tab.calpol one tab twice daily, salt water gargling,steam inhalation...ask her to stay indoors for next week or so
Health Tips
if she starts to have any difficulty in breathing or high grade fever...approach nearest hospital!!