The "Don't Know How To" video is interesting. She already sang far, far, better than I ever have or ever will. But I wonder if this represents anything like her best at that age; I've known "unknown" 15 year old girls who were more impressive than that. My tentative take would be that she didn't happen to be anything like an exceptional child prodigy, but between training and experience she has really developed well. All of which is probably just irrelevant blather; I'm with those who consider her to be a joy and a wonder.