So. I just reread this book, having read it a few years ago, because I kept thinking about it. I really like this and Antoine's subsequent books in the series, I rarely reread books.
This is one of those "yeah it's bad, but" books. Let me explain.
I have trained in karate for decades, and also have formal training in copy editing. That somewhat laughable combination applies well here.
This is a story about a young woman in her last year of high school, who has a hidden background and has been trained in martial arts and survival for her entire life, to the point where her confidence and abilities are almost mystical. Some scary people are out to get her because of her past, of which she is ignorant but is slowly revealed as the story progresses.
The critiques of the quality of the editing are true. This first book was tough to get through... it is clearly self-published and lacks any serious editing. Someone like me has to carefully suspend that part of their brain to enjoy it. The clearest need is for a good developmental edit - there are times when the plot gets tangled and confusing, mostly because the author jumps POV within a scene, and between scenes. And at times the characters do seem flat, and the story does not flow.
That said, there are pleasurable passages and turns of phrases, and the pace of action is solid. To the author's credit, improvement in his writing can be seen as the series progresses. This is a very fun read, even as the protagonist is supernaturally good at what she does, it is suspenseful.
One of the strongest parts of the book is the plot... which is one of the two elements that turn this into a four star instead of one or two stars. The story for me was really compelling. It is fantasy, and the premise is unrealistic, but Antoine stages it well and it is really fun to read.
The other strong part for me is the martial arts ethos. Not the martial arts techniques... although the writing about the techniques and fighting is strong and easy to imagine if you have training. Most everything depicted is possible and I have seen it myself. (Though not all in one person, and though Emily is supernaturally good at it.)
I think I am responding to the warrior ethos captured by the author in this YA series. The responsibilities of a fighter, the acceptance of death, the commitment to your morals. The focus is on the initiative in a fight. Finding a way to avoid a fight, finding ways to subvert an enemy. She really is a superhero, later in the series you see her slow transformation, but in this first book she starts as a kid who is steeped in a moral grounding, and the rest radiates from that.
I suppose this is what I came back to reread.