Sounds like a tough business to get into because it seems to be a bit trendy. Since she's 14 and not having to support a family, I'm sure her motivation is much more than monetary, so I say go for it!! It's great to see the younger generation taking a bigger interest in this sort of thing.
I've noticed a lot of websites popping up where people are selling their home made goods... don't know any of the top of my head (keep in mind I'm a guy) but I would check some of them out to see if there's other people doing the same thing.
Coming from a fellow small business owner I wish you guys luck with your endeavor.