My Babysitter's a Vampire (2011)

S1E13 Re-Vamped

Jesse rises from the grave, determined to win Sarah back, but she turns him down. Meanwhile, Ethan and Benny gear up to eliminate Jesse once more. At their high school dance, they confront him, armed and ready, but Jesse manages to bite Ethan before escaping. Sarah faces a tough decision: she can either save Ethan, which would transform her into a full vampire, or let him become a fledgling. Choosing to save him, she extracts the venom from his blood. Later, Benny’s grandmother reassures a wounded Ethan that he remains completely human, but he feels guilty about the sacrifice Sarah made. Outside, Erica tells Sarah they are now bonded as best friends forever, promising her unwavering support. Embracing her new reality, Sarah, along with Erica and Rory, takes off to their after-party.