Oh, puhlease. The twists really let this book down, along with the weird, sappy romance. I so enjoyed the first 150 or so pages when Karou and Zuzana were interacting, but the latter half was just dull as ditchwater. The twists were both predictable and stupid and blatantly there purely to set up for a sequel, particularly the second one. Not terribly impressed, but the writing was really nice.
EDIT: It also bugs me in books like these that the character with actual personality and a decent grip on reality (Zuzana) always has to be peripheral or a sidekick, whereas the main character always has to be strong and perfect and beautiful and brave... and as dull as a really dull thing.