This book has hints of an interesting story, but it's buried under a real mess. Usually, an ignorant or naïve protagonist is useful in learning about a new or different culture. In this case, Cass's ignorance is more of author exploitation than anything else. What I mean is that everyone else is continually using her ignorance against her to manipulate or force her into what they want and she is forever finding herself enmeshed in dire situations with no idea what is going on, what the stakes are, or even who the important players are.
It doesn't help that she's kind of stupid. Any given piece of information has to come her way two or three times before she seems to process it and even then, she finds new and boring ways to screw them up.
And that's before you even get to her motivations. The whole novel is her out to get revenge for what amounts to her very existence. "Oh dear, I have to sip mana from people or I get hungry." Never mind that it means she can't die and that it doesn't seem that the people she snacks on are any the worse for wear and that she has zero side effects (no sun allergies, no vulnerability to crosses, or guns or knives, even). Heck, her savings on food alone is a huge financial boon. By all means, sister, you go get that bastard who fiddled your birth so that you have all this unaccountable power and nobody telling you what to do.
This is exacerbated by her truly twisted loyalties. The mother who can't be bothered to give her the time of day and who betrays her every chance she gets (and there weren't a few) is perfectly fine in her book. "Hey mom, you here to betray me again? Kewl." There's a final conversation that's almost exactly that (okay, I translated it a little bit). And the one guy who actually gives her any information? Hate that guy. True, he's a smarmy bastard and a complete git with no morals and fewer scruples but she can't be bothered to do anything more than giving him the metaphorical bird. I mentioned he's the only one actually giving her needed information, right? I'm not saying she should sex him up or anything. I'm just saying that maybe she should attempt to get some of that data before she goes all bitch-face at him.
Only it's actually worse than that because the only thing she does let him get away with is kissing her wobbly against her express will. So she can't be bothered to deal rationally with the man, but she's okay with him rubbing up against her and sticking his tongue down her throat. Want more of that for sure.
And that's the crux of her character in a nutshell—she's forever acted upon, never acting herself. Even the big bad vampire does whatever he wants with her/to her and she's completely helpless against him. It was, quite frankly, disgusting how little she seemed to care that she was tossed about on the whims of others and her only thought is "I wish he'd make me his". This is the polar opposite of a strong heroine. Yeah, she argues, flings names and sometimes knives, but she's completely ineffectual and none of her actions actually mean a thing or move the plot along.
So here's author 101 for Ms. Caine: if you have a plot/story idea and a character, your best bet is to use that character to move the plot . . . at least a majority of the time. Having every single development moved on by the actions of others means that she isn't the hero of this story. She is a pawn and doesn't seem overly bothered by the role.
And an apology. This is an angry review, but that anger is mostly aimed at myself. I have no idea why I wasted the time to finish the book and have nobody to blame but myself. None of this stuff was hidden. It was apparent from the beginning that Cass was a spineless wuss content to be tossed by the whims of others. I have no excuse...