Innocence is nothing like Twilight (spoilers)
I just read the novel. There's an adolescent girl and vampires, so it must be like Twilight, according to internet chatter. But it's nothing at all like Twilight.
SPOILERS follow
It's much more like The Moth Diaries and even more so the structure and archetypes of traditional fairy tales like Snow White and modern fairy tales like Coraline. It does not have the recent trope of vampire as boyfriend nor sympathetic antihero but rather the witch archetype recast as a quasi-vampire.