Girls that growl

"Rayne McDonald, a goth vampire and vampire slayer, must go undercover as a cheerleader at her high school to find out what happened to the captain of the football team, who has disappeared, and to see if the peppy cheerleaders are really werewolves."
"Rayne McDonald, a goth vampire and vampire slayer, must go undercover as a cheerleader at her high school to find out what happened to the captain of the football team, who has disappeared, and to see if the peppy cheerleaders are really werewolves."@en
"Third in Mancusi's hip, sassy vampire series, featuring the heroine of Stake That! She's a vampire. She's also a vampire slayer. (It's a long story.) And now Rayne McDonald, Goth girl, has to carry out her most deviant mission yet: trying out for the cheerleading squad. Rayne already has enough on her plate: her twin keeps whining about whether or not to go all the way; her mom's boyfriend is moving in; and her man, Jareth, who's now allowed out in the sun, has turned from a dark, brooding hottie vamp into a surfer dude. But this vampire slayer is still on the clock, and she has a new assignment. A member of the football team has disappeared-and her bosses at Slayer Inc. think the cheerleaders had something to do with it. Now they want her to infiltrate the squad and get the dirt. But first, she'll need an extreme prep makeover. If only they'd let her wear fishnets under that revolting uniform."@en