I totally loved this book! The author has a thing for taking a Grimm's fairy tale and making it into a unique story as confirmed by her retelling in her book Of Beast of Beauty which I loved too. 
 While it didn't take place in the same setting as OBaB, at least I don't think it- it might have been in the same universe or at least in the same world just in another different country than them, it was still exceptionally written. I loved the world building and the way each of the characters were described. They each had their own sets of problems and were all described in depth that they weren't merely two dimensional, they were unique and I felt like I could somehow connect with them or something. I actually felt something for them and I found myself immersed in the world and in the character's growth. 
 The Princess of Thorns is a sort of retelling of the Grimm's Fairy Tale The Six Swans. There was also a little of Sleeping beauty mentioned (her mother was Sleeping Beauty regardless of the main character's name being Aurora don't get confused on that- it's just a name). Like in OBaB, this story was told in different points of views, and I liked reading what was going on in differing point of views of Aurora, Niklaas, and the Ogre Queen. They all blended well together and it was nice and interesting to see what was happening and people's true thoughts because both Aurora and Niklaas had secrets and actions that were unexplained for a longer time in the book. It was also nice seeing how they thought of each other secretly and how they slowly fell in love with each other even if they kept denying it and not believing that what they felt was love towards the other person. 
 I'm glad that there was no love triangle involved in this story at all. Sure, near the end there was that one small thing that might have been misconstrued as Aurora being in love with Thyne but that's only because Niklaas was too stubborn to realize that she loved him and not Thyne. But apart from that, I loved watching all of the fascinating characters grow throughout the book. By the end of the book I wasn't ready to let them go yet but since they finished the story and beat the evil guys, it was okay. 
 Hopefully Stacey Jay continues on writing other fairy tale retellings like Princess of Thorns and Of Beauty and Beast because she does them so well and I love reading her books. Definitely looking forward to her future books!