Thank you for your query.
In my opinion you should take your daughter to the doctor who shall examine the white patch
and guide you appropriately. It is not possible to give a guidance without seeing the patch. If the application of anti-fungal ointment has not given relief then the white patch is not a fungus. Fungal infection
can also be confirmed by examining a scraping of the area under a microscope which the doctor will do if he deems proper.
I hope I have answered your query to your satisfaction.
Wishing your daughter an early recovery.
Rajiv K Khandelwal