I like the concept and she obviously has good design flair, but I think to be ready for putting to market she really needs a bit more practice and a steadier hand - those seams need to be neat and consistent. That's just a matter of practice, but I don't think she's ready for selling just yet. I read a lovely thing about creative people the other day, which I'll never manage to find so will roughly paraphrase... people who are naturally creative tend to have a good idea, and excellent taste. So when they start making something new they have the taste and judgement, but not the skills yet - unfortunately, because they have the taste and judgement they can see their stuff isn't yet as good as they wish, and they get fed up about that and give up. But all successfully creative people went through the initial stage, where their work wasn't as good as it needed to be. You just have to push through that and practice, practice, practice. I tend to have a go at something, think "that's rubbish" and give up - not the best approach! Tell her to keep it up.