With little history, it seems that your daughter has got tinea versicolor
There is brown patches with mid exfoliation and dryness.
It is superficial fungal infection
caused by malesezzia furfur.
It is benign condition and cured by simple tretment.
Antifungal tablets and cream would improve the disease.
Avoid soap for bath, she may use dettol liquid.
Cleanse the scalp with shampoo containing ketoconazole
I think , let her take to consult dermatologist
for firm diagnosis and treatment ..
I hope you got my answer.
Dr. Ilyas Patel MD