I have to say first that Goodreads sent me an early edition so some of my comments might be nulled by that fact. THANK YOU GOODREADS FOR THE GIVEAWAY! :) 
 Anyway... The first thing that I noticed was the tense that the book was written in (this might be something that was fixed before it's release date). Instead of being written in the simple present, parts of it were written in the present continuous which meant that some sentences looked like this: "Pretending not to notice the way his gaze roams over me, straying from my waist-length brown hair peeking out from my scarf, to the tie-dyed tank top that clings under my jacket, to the skinny dark denim jeans, all the way down to the brand new slippers I wear on my feet." (Yes this is an example straight from the book.)Every action felt like it was still going on instead of happening and then ending. In some cases like this sentence, it felt like the sentences were left open and like there was something else that was supposed to be added onto the end of it. The writing style smoothed out as the book went on, but the beginning was written poorly and distracted the heck out of me. 
 The plot was well crafted and you were sort of able to gain a relationship with some of the characters, but their development was a little shallow. 
 The ending also felt a little rushed to me. There is a part when Daire and Dace go into the Underworld and while I thought this could be a really good spot to beef up the book and really work out some descriptions of what things looked like and what the character's experiences were, that part took up less than one chapter and left me feeling like I had skimmed that part of the book and not actually read it. 
 Overall, I gave the book 2 stars (hopefully in between the time I received it and the publishing day there were some changes made.) The development of characters and the plot (in some spots) left me feeling like I was skimming parts and I could NOT get over the poorly written first few chapters (present continuous tense). I would recommend this book to a crowd of teens who aren't too worried about the development of characters and who want a quick read that has magic and romance in it (this book will offer both). 
 I was thinking about reading another of Alyson Noel's books to see if all hers are written this way. Any suggestions for me?