Jewelstone

I'm already seeing contradictions with the siren storyline. Last season, Virginia said the monster strips everyone it encounters of its humanity. That's why everyone in The Armory was acting insane before they killed themselves. Now she just wants a couple of vampires to feed her bad guys.
Also, shouldn't Sybil have known about Elena and Bonnie from the very beginning? She used Elena's voice to get Damon in the vault and she was right behind Enzo when he was talking about being a hero for Bonnie.