Wow! This is a short book, a novella, but it's 100 pages or so are breathtakingly beautiful. Personally, I'd put it in the same category as dystopian classic, The Giver, which has a similar message and feel to it. The writing was REALLY strong, the right combination of simplicity and artistry, and the only reason I wavered between 4 and 5 stars was that, due to the shortness of the novella, the world couldn't be developed more. The concepts and plotlines could easily be extended into a full length dystopian series, should Ms. Mellon choose. In the end, I had to rate it 5 stars because of how entranced I was by the world created by the author.
If I had to guess, I'd say Kay Mellon has a bright future ahead of her, especially considering she's only 20.