I read this book when I was a kid, absolutely loved it, and though I can remember the feeling of reading it, remember nearly nothing about it!
It was some other world, where this society or village lived in a forest, high up in the trees. The main protagonist was a curious girl.
No one was allowed down to the bottom I think, or maybe someone was sacrificed and thrown down there sometimes? I just remember there being a dark secret about the bottom of the forest and she eventually goes down there. Also maybe there were blue lights in their village?
I know it's a really vague description but if anyone knows something like this, it would be amazing!
Thank you! x