Thanks foyr query
With the limited information available it seems your grand daughter has facial eczema
,an chronic inflammatory condition characterised by patches of dry & itchy skin.
Kindly get her checked by your pediatrician
to confirm the diagnosis.
In the meantime apply vaseline several times a day each time after dabbing the area with clean wet towel .
For control of itching you can try atarax
syp in appropriate doses.
Hope you find the information useful.