I wanted to like this book. Theory behind it is great, the book itself is not. 
 The theory, that a world split by a rift that separates science and magic into unique lands, could have been an AMAZING book. There were strong elements, like a house cat that because a magical warrior being on the other side of the rift was my favorite part. The girl whose parents come from each side of the wall, also amazing. But the pay off was weak. The book needed to be longer-- the pay off at the end felt forced, like a college writing assignment that someone was ripping off the printer on their way to class.