Valerie Birkhead is best friends with Sabrina Spellman at Westbridge High School. She is also good friends with Sabrina's on-again off-again boyfriend Harvey Kinkle. As their friend, she is the target of mean girl head cheerleader Libby Chessman.Valerie is shy and awkward with low self-esteem, but she is smart. She wants to be popular and fit in and Sabrina helps her develop more self-confidence.Background: She moves to Westbridge from Minnesota. Her family moves often.