Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns..
As per your complain it seems that your daughter is suffering from apthous ulcer or
canker sore an as it is inflamed there is pain and burning sensatiob and sensitivity to spicy and hot foods...
I would suggest you to start gargling with warm saline solution.
Apply a numbing gel containing Lignocaine over the ulcer...
Take a Vitamin B complex daily..
You can take anti inflammatory painkiller like
Ibuprofen..
Avoid spicy and hard foods..
Take a soft and bland diet..
You can also suck ice and do cool water rinses..
In case of no improvement consult an Oral Physician and get evaluated..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.