Taken (Ava Delaney #4). Ava Delaney Original, #4

Book four in the Ava Delaney series. Approx. 78k words. Unsuitable for younger teens. It's been months since Ava fooled the British vampires and dealt with Becca for good, but although life has been easier, it's not without its problems. Her deal with the twins is physically harming her, Peter's grasp on his sanity is tentative to say the least, Carl is struggling, and Esther is losing her edge. Ava's been asking too many questions in an attempt to fulfil her various deals, but her persistence turns out to be the biggest problem.
She's not the only one asking questions, but somebody wants her to stop, and finding out who's in charge is a lot harder than taking care of her new houseguest. To survive, on her own terms, Ava must take control of her own destiny for a change. That might involve swallowing her pride and accepting help from those she doesn't trust because there are new foes on the horizon, and the number of people needing her protection keeps on increasing.