Barbie as Rapunzel

I have loved the story of Rapunzel since I was a child and I have to say I find this Barbie version very discouraging. It's not the story at all and that's just wrong. I mean I understand that little girls love stories about princesses an that Barbie is trying to provide that, but I think it's more important that these little girls learn the real stories which as such a beautiful part of history. I know it's cute, but so is the real story - so my question is why? Why ruin such a wonderful story by adding a magic paintbrush and a talking purple dragon? What was so wrong with the original story that they felt like changing it? - it just doesn't make any sense