Frostfire by Amanda Hocking

Kanin chronicles bk 1. Pan Macmillan, 2015. ISBN: 9781447256649
(Age: Teens) Highly recommended. Bryn Aven is determined to gain status amongst the Kanin, the most powerful of the hidden tribes. Being a half-blood she struggles to win respect and has to fight hard for what she wants, in a place where half-bloods are a rarity. All Bryn wants is to join the elite guard protecting Kanin royal family. Bryn will let nothing get in the way of that, not even a forbidden romance. The fallen hero that Bryn once loved and worshipped is now kidnapping Kanin children, the Changelings, from hidden placements within human families. Bryn blames herself and feels that it's her responsibility to stop him.
This is an intriguing and exciting read that I could not put down. I loved Bryn's determination to get what she wanted and how she would not stop at anything when she put her mind to it. Bryn is the kind of girl that you would not want to mess with in the schoolyard or anywhere else. I felt her determination and all her other emotions. This gives a new point of view to the childhood views of trolls, that is nothing like we had originally thought.
Cecilia Richards