I read the first two instalments in this trilogy late last year and waited somewhat impatiently for this final book. I think it was more that I wanted conclusion to the story than because I was particularly invested in it. 
 As I was reading, I found Ceony became progressively more frustrating. Furthermore, she seemed intent on finding trouble. I think every major scene between Ceony and the villain was instigated by Ceony rather than the other way around. 
 The saving grave of this final instalment was still the magic system. I really liked the inventiveness of it all. Though I have to say, it was so easy to play with magic as Ceony was doing that it baffles me that no one would have come up with the answer before her.