What is the author's style in Wolfsbane: A Nightshade Novel Book 2 by Andrea Cremer?

The novel is written in the first-person point of view. The narrating character is Calla Tor, a human who has the ability to become a wolf. Calla is an alpha wolf, the leader of a pack of wolves. Calla and her pack were created by a group of humans called the Keepers who used magic in an unnatural way to create a group of humans who could protect them from the Searchers. As this novel begins, calla has just defied all her masters by saving her lover from death and escaping with the help of the Searchers.