According to the comments, it said that she has been wearing hearing aids since the age of 2. That's pretty late in life for a child to start learning how to speak. I doubt that this woman is profoundly deaf, probably moderate.
After looking up more articles on this particular woman, apparently it's a new type of hearing device that is added to your ears. They have to to perform a surgery to implant it. Then 6 to 8 weeks later, it'll be activated just like a cochlear implant would be. It has a price tag of $30,000 for the tests, pre-op, surgery, activation, etc.
I decided to look up on this hearing device, apparently it's designed for people with moderate to severe hearing loss. That was something that I wondered about the first time I came across the YouTube clip because not much details were shared at first.
The first mistake the mainstream media made was how sensational they made it out to be. The second mistake they made was misleading the readers on the facts. Not to mention how much I don't like how the comments on YouTube are getting pretty ugly coming from all sides.
For her, it was a sensational experience, but please don't exploit her experience. The worst thing about this is that it'll give people the wrong idea. They are portraying it as a "miracle cure" when it's not. They did the same thing with cochlear implants a million times over the past decade. These devices do assist people in hearing, but the results vary from individual to individual. For some, it works great, for some, it works okay, for some, it doesn't do much.
I'm glad that this device is working out very well for her.