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I have gone through your case. In my opinion, I have two diagnosis of your daighter's lesion.
It could be fungus or eczema patch. For this, please mix Hydrocortisone and Clotrimazole creams in equal amount and apply two times a day for 14 days. Also apply any baby lotion at night. Within 14 days, it should heal. If in case, it does not heal, then please see your local dermatologist to evaluate her for other conditions.
My second diagnosis is leprosy. Please consult your local dermatologist if the lesion does not heal.