That's a very good kanku dai. If she's that good, it's not because some adult is standing over her and forcing her to train, train, train -- you simply can't force that level of skill, and particularly not from a child.
Actually, I have seen more than a few clubs over the years with lots of kids that are really, really good. Maybe not this good, but still, I remain impressed with Karate's 'power' over kids. It is teachable.