When I first started this, I figured, based on the writing, that this was probably a young author's debut novel - but come to find that it's not.
The idea behind this is good, it really is, the execution is just so poor. Nova is one of the most unlikable characters I've read for a long time, and though I read this book in just over 24 hours, I still can't tell you what her motivations are or even, really, who she is. I get that Nova is supposed to have a "traumatic brain injury", but the author just seems to use this as an excuse to not develop her character at all.
A LOT happen in the 300-something pages of this book, and a lot of it doesn't really make sense. It's a lot of back and forth to a few places, and then we forget the people who were relevant in the first few chapters, but oh, somewhere along the end they're needed for the plot to be driven forwards, so all of a sudden they're meaningful to the character again.
All in all, this isn't a bad book to catch a break from any book that requires you to think, since there's no way to predict anything - as this just takes completely unrealistic (yes, I know it's fantasy, but that doesn't mean there aren't limits within the world itself) twists and turns that mostly just feel like cop-outs.
I might do a more in-depth spoiler review when it's not... 2.30 in the morning, but for now this is where I'll leave it. I might pick up the second book if I can find it for a low cost or at a local library.