I always tell patients when they ask about products like this is that it’s like a cure for cancer. If there was something that really worked, you’d know about it, it would be everywhere, and a billion dollar idea.
..Reminds me of a time a customer contacted us and told us that one of our products "had this amazing effect" on this person suffering from cancer .. Like you said, and like I told that guy - "a-thing" might work great for "a person".. but replicating the results in "people" is a different matter altogether. :0)
The head of the oncology department treating that patient contacted me, so I guess our customer wasn't BS'ing in that case - told him to do all the testing and go through the channels, but our product was never intended for that use, and no claims for that use should be propagated without all the proper testing to back up those claims. Which, he understood entirely; though we had to quit selling to that customer who originally made the claims, as he was continuing to make claims our own testing couldn't back-up.
So, I do get your skepticism.
Too many people out there grabbing for cash, and selling BS products "to alleviate another's suffering" without there being any basis in reality for the broad claims they make. We deny sales to people like that at-least once a month.
"A thing", might help "a person" that can be true, but it's the proper testing that separates an effective antibiotic from the "Dr. Shawshank's Stupendous Colon Remedies" of the world.
What could have happened, is that she was being distracted by periods of vibration. The buzzing interacting with the same nerve bundles and tiny bones in her ears and whatnot. ...Which might be kinda like stabbing yourself in the leg with a spork to confuse pain in another area of the body. ... I don't know. Either way, I'm not sure I want to replace whistling, with strap-on buzzing/vibrating headgear - not sure that's a step in the right direction.
..but ...y'know ..fingers crossed ..that one day..