Believe in Herself

So, when I was about twelve or so, I found and read a copy of the first Peter Pan book. It is...a very strange book. One of the running themes is that that version of Peter has no real morality to speak of. At some point, that Tinker Bell ends up abandoned when he forgets about her, and dies - I forget in which order this happens. The book also runs with the 'fairies die if you don't believe in them' thing, though...

But what if a fairy just learned to believe in themselves?