Jenny Majorhealy is a 16-year-old girl. She once dated T.J. Taylor, but he turned her into an middle-aged woman (Heidi Swedberg) after their relationship took a turn for the worse. As a 40-year-old woman, she poses as an art teacher at Tribeca Prep, but during one class, she noticed that Alex seemed to be unnaturally fast at cleaning up after class, and suspected that she is actually a wizard, just like T.J. She confronted Alex about this, and was turned back into a teenager on the condition that she doesn't tell anyone that she is a wizard.