What Causes Numbness In The Tongue?
Get examined by a neurologist
I have gone through your question and understand your concern.
Numbness of tongue may be due to vitamin deficiency especially vitamin B12.
Unilateral numbness maybe due to nerve compression and requires clinical examination by a neurologist.
You can get her vitamin B12 supplements.
Hope you found the answer helpful.
Do get back to me for further queries.
Dr N Kumar