What is the author's style in Hold Still by Nina LaCour?

The language of the novel is simple as it is written from the perspective of a sixteen-year-old, and yet extremely powerful as Caitlin goes through a variety of different emotions and feelings throughout the novel. Most of the characters in the book are younger, as well, leading to nearly an entire novel spoken by young adults. This leads to a simple plot line, and yet one that is easily understood.