Hayden Foster (Abby Ross) was a villainess from "Ladies Drink Free," episode 12.16 of Supernatural (airdate March 30, 2017).
About[]
Hayden Foster was a 16-year-old girl who secretly dated a slightly older man named Justin, who was (unbeknownst to Hayden) the leader of a werewolf pack. The age difference was the main reason why Hayden lied about the relationship, and in the beginning of the episode, she is tracked by her brother, Ben--who followed Hayden after one of her friends voiced her concerns about the relationship to Ben. While the siblings walked home, Hayden distracted Ben so she could go back to Justin--who later appeared in a disguise and attacked Hayden. After the attack, Hayden was found by Ben, who was killed by Justin.
Heel Turn & Death[]
Hayden survived the attack, which brought Sam and Dean Winchester (along with British Men of Letters member Mick Davies) to the case. While hospitalized, Hayden's wounds healed quickly; a sign that Hayden was becoming a werewolf. Mick kept the sign a secret from the brothers and returned to Hayden's hospital room later that evening with intent on killing her.
However, Hayden turned heel and transformed into a werewolf under the full moon, as her claws had appeared and she opened her eyes to reveal animalistic yellow pupils. Following her transformation, the evil Hayden rose from her hospital bed and attempted to kill Mick, only for the villainess to be stopped and killed by Mick, who injected silver nitrate into her system.