Thank you for your query.
Based on the limited information you have posted it seems to be some sort of rash she is developing. If it is itching it might be allergic in nature.If it is ring like ,shiny and itching it might be a fungal infection
. A photograph of the lesion or a detailed description would have helped a lot. kindly apply a calamine
with aloe vera
cream over the area thrice daily to see the effects.A mild antiallegic syrup might help too.If the lesion persists consult a dermatologist
.Hope this helps you.Have a nice day.