Hello, My name is Dr. Phil Yoo
I am curious if the burning mouth patient ever got relief? I had a patient who had dry mouth syndrome and his saliva immediately returned after injecting exosomes orally which most likely restored normal 9th glossopharyngeal cranial nerve function, which happens to be the nerve that innercvates the posterior tongue so if her burning is in the rear tongue and throught, this procedure may help her as well. If the burning is in the anterior tongue, or the lips, than that it is most likely the facial nerve which can also be injected. Trigeminal nerve can also be targeted orally.
We are down the road from you in Garden Grove off the 22 Long Beach freeway so let me know if you would like to discuss her case but I hope you guys figured it out already.