I honestly liked this better than the first book, the characters were really interesting and I can't wait to find out how they influence the later books. 
 Merged review: 
 2.5 
 Disclaimer: I listened to this book on audio, I didn't actually have a physical copy (until the last 4 chapters) so that may have affected my opinion. 
 I started out liking the story, the characters seemed interesting, I loved the relationship between Wendy and her brother, and I liked that Finn seemed to be pushing the rules to be near her. Then they went into troll land and I felt as though the book began its long decent into nothingness. All of a sudden all Wendy could do was whine and moan over Finn. The way that it was written (or the way I heard it I guess) it seemed as though everything with the relationship between Wendy and Finn was in her head. It was all about her interpreting his looks, moaning about how he was always all about business, etc. It really wasn't until much later that he actually got around to expressing any actual interest. 
 I also had a huge problem with how obvious many of the plot twists were and how slow Wendy was to pick up on them. By the time she finally figured out what mansklig meant I was ready to scream at her. Also, how long it took her to figure out that Finn was of a 'lower class' than she was - even the fact that he had to sit down and explain that to her was kind of ridiculous. I know that she wasn't supposed to be terribly book smart, but she must have been blind to not notice the class system. 
 I was also very frustrated with the 'princess lessons' - it was cute in the Princess Diaries because everyone knew that Amelia had no idea what she was doing and half of the humor was watching her struggle through it. Here, Wendy didn't have any idea what she was doing, but instead of acknowledging that they all just expected her to know everything right away, and it was not funny, it was more frustrating than anything else. Any time someone even though to mention that she should have learned something they all just say "Finn should have taught you" and all that Finn ever did was grumble at her and then point out that it was his duty to work with her, not his choice. Did they serious expect her to understand how to behave as a princess because of her bloodline? I also was frustrated with this portion of the book because all of a sudden it was about history lessons and etiquette, somehow it was like everyone decided to not talk about the powers that Wendy had already developed (if I were her I might have tried to use my persuasion to get myself out of some of those dinner parties). 
 It is somewhat understandable that they expected her to have a certain level of understanding of etiquette because of where they left her to grow up, but that just led to another issue for me. If they were going to leave their princess (who they are pretty darn sure was going to develop very strong powers) with a family, who Elora obviously spent a long time picking out and was willing to risk a lot for (after all boy/girl switches are very hard to do) then why wouldn't they bother to check up on the family on occasion? Obviously they have the means to do so if they are already pulling these little switcheroos. Did it not occur to her that she may want to check in and make sure that the princess who was going to take over her kingdom was still alive? For all of the emphasis they placed on how important Wendy was, prior to her appearance, she may as well have not existed. 
 Even with all of Elora's issues I could not bring myself to feel any sympathy for the character, even though there were moments where you were supposed to see that she was a real person too, they were just unpersuasive. 
 Another HUGE problem I had with this book was that after suffering through all those pages of princess lessons, we then get to finally see Wendy get a back bone and do something to help herself in the last five pages. Seriously, she is recapping the most important thing to happen to the plot since she was taken off to troll land in the last five pages. Arg, this was incredibly frustrating, I would much rather have read about Wendy growing up and standing up for herself than the middle portion of this book where she was whining the whole time. 
 Pros: I did like Rhys as a character and I felt horrible for him. I also really liked Matt's character, and on occasion I enjoyed Finn as well (but it is not a great sign when the secondary characters were the only ones that I really enjoyed).