The Coach by M. C. Sumner

Talli McAlister is a survivor. She killed the vampire that terrorized Westerberg High. Then she did in all of his followers. Everything is finally back to normal at Westerberg–everything except Talli. Talli’s not normal at all . . . Talli’s turning into a vampire! The coach knows all about Talli. He needs her on his team. He’ll show her how to be a vampire, how to kill. But Talli doesn’t want to be a bloodsucking monster. Now the coach is giving Talli a choice . . . play the game or die.