That does sound a bit long for the level of skill you see in the images. It sounds like her big talent is having an ultra long attention span, not necessarily amazing painting skills.
Going back over her images, she needs to open an anatomy book. The proportions are off in a number of them and the features are all cherubic. while the childlike features can be dismissed as a stylistic thing, the proportions are another issue. Not to say that she isn't talented, but she still could improve a lot and I'm beginning to get the impression that a good part of this image of a prodigy is being cultivated and created by someone.
As someone else said, 200+ hours is long enough for anyone with the basics of artistic talent to create something good looking. I can say from experience that an older, more experienced artist would not need that much time to create a portrait of Jesus.
As for the child star thing, I can't think of too many child stars who retain their stardom long after high school. Especially having been taken out of school like she was.
That pretty much sums up what I was thinking as well.
I like the colors she uses, but...man, I swear I've seen that jesus picture before. I can't place where, though. ...I would be interested to see her paint, like a tutorial video of some sort. It would be interesting to watch. What kinds of paint does she use? Oil? Acrylic? Does she stretch her own canvas? What kind of music does she listen to while painting, if anything? Stuff like that. I think if they had a video like that geared for kids, it might inspire them to get into art as well.
...Also, thank you to whoever moved this out of General discussion.