Good story.
I really liked the story and characters - Chloe is quite the badass - but the book could use some help with grammar and formatting.
My primary grammar issue was with vocative and joining commas. A vocative comma is used before or after a name, such as, "Hello, Chloe." Sure, without it ("Hello Chloe.") is clear, but it made reading dialog feel rushed to me. Joining commas are for sentences that, well, join sentences together, such as, "Chloe is a witch, and James is a werewolf." This type of comma was missing most of the time, and there were commas where there shouldn't be, such as, "Chloe is a witch, and needs training." I know this sounds nitpicky, but I hate that this took away from my enjoyment of the book.
The formatting errors were mainly white blocks before chapters - I read in sepia since I read at night a lot - and these blocks stand out. Perhaps the background color was changed to white instead of automatic.
Anyway, like I said, I did really enjoy the story and will be reading the sequel.