Thank you for your query.
In my opinion you need not worry about them unless they are red, painful to touch or contain pus. It is very common to have clear fluid filled blisters
following insect bites
If they do not subside in the next day or two it shall be better to seek a dermatologist's opinion.
I hope I have answered your query to your satisfaction.
Wishing your daughter an early recovery.
Rajiv K Khandelwal