A whole hell of a lot, man. Someone was sacrificing all of these people and we couldn't figure out who it was, and then finally realized it was the new english teacher. Apparently, she was emissary to Kali's pack before Kali (she's the one with the toenails) killed them all and almost killed her too. Managed to live, mastered the ability to look not-deformed, came back for revenge when the Alpha pack came around. She had Scott's mom, Stiles' dad, and Allison's dad all prepared for sacrifice too, but we got to them in time. Pretty sure she's dead now.