Who is Stephanie Winslow from A Knight of the Word and what is their importance? A_Knight_of_the_Word English & Literature Stephanie Winslow | A Knight of the Word

Stephanie is John's girlfriend. They've been dating for one year, and John is quick to defend the impossibility that she is the demon. In time, Nest has enough evidence to convince John that she is the demon, leading him to kill her..... but not until she appears in demon form.