Ellie Quinlan

There were schoolbooks scattered beside the bed, as if she had been studying before he came. I pushed one of the book covers closed with my toe, careful not to rearrange it. Calculus.
She'd been studying calculus before she put on her makeup and black teddy.
Shit.

(Bloody Bones, page 92, paragraph 1)

* Raven is the family poodle, but  preferred Ellie until her death. Then it preferred Jeff, her younger brother.

* When Ellie rose from the dead at last, she was ravenous. Xavier allowed her to feed on Ms. Harrison with him while Anita and Larry watched helplessly. He called her Angela, but they all knew better. 

* Anita was able to raise Ellie from the dead in the daytime using her blood and Magnus' blood. Anita forced her to wrap her arms around him and hold him back while she tried to escape Seraphina's control. Magnus dragged Ellie outside with him to try and stop Anita, and Ellie burst into flames, killing Magnus as well.