Sophie is a minor antagonist that appears in an attempt to break Erica and Seth apart by any means necessary.
Sophie first appears when she is working at a cafe. She sees Seth and instantly falls in love with him, despite being an adult, while he's still in high school. After Erica insults her, she threatens Erica with unbearable torture and walks away.
After Seth leaves, SoPhil drugs Erica and takes her to an abandoned warehouse. She strips her down to her underwear, ties her to a table, and violently tickle tortures her as she screams for Seth to help her.