I have to say I am totally baffled by this book, especially for a YA one.
If the plot hinges all on the concept of Steppenwolf, then it is extremely bad because the location is obviously some imaginary place and I wonder if that world even knows Steppenwolf?
The sense of place/point of references is disjointed.
The author's voice isn't consistent and the quality of the dialogue is stilted.
One can only question the wisdom of the publisher/arts council for awarding it as a prize winner for a YA competition 2 years ago.
I can't even award it a star because it is just weird.