Thanks for writing in.
The condition she is suffering from can be insect bite reaction,papular urticaria
You can apply a cool soothing lotion like aloe vera
lotion over the area.A mild steroid cream like hydrocortisone
will be helpful also.
Consider visiting your GP or dermatologist
for proper diagnosis and treatment.
You can give syrup benadryl for itching till you visit a doctor.
Hope this helps.