u/CurrentTune2858

A spirit of particularly reprehensible origins, he has spawned a cult of young women through his connection with a young practitioner named Leonore.

His silhouette is shrouded in a large sheet or cloak—reflecting the private, intimate nature of seduction—while his aura radiates a confidence that compels one to trust his words; meanwhile, his scars and dagger demonstrate the strength to protect those who fall into his embrace.
He speaks in a sweet, seductive manner that some find deeply unsettling.

His cult is based at an exclusive all-girls Catholic school.

This spirit is the vision of the innocent; it represents unwavering optimism, faith, and a belief in the fundamental goodness of the world. It is the embodiment of childlike trust and purity, driven by a deep desire to create paradise for themselves—if not for everyone—friends and enemies alike.

The plot is basically this: Jess tries to cheer up a young Amy and takes her out for a walk, only to suffer the same attack that occurred in the canon—a blow to the head that triggers Amy's powers, saving her aunt.
Things return to normal for a while, until people begin to notice changes in Jess, who apparently suffered alterations to her brain. If you have anything to contribute to the story idea or Fleur's character, please share it.

Just karma, or too cruel even for them?

I'm including this out of curiosity.

Sarah (The Maxx/1995): Curly hair, an absent father and mother issues, she's bullied in college and betrayed by her best friend/secret crush. I don't know how to explain it if you haven't seen the series, but she has very similar pessimistic internal monologues.

Shino (Naruto/2000): Glasses, unremarkable clothes, but above all, his ability. Perhaps if you've only seen the anime, you don't grasp how truly terrifying this guy was. His technique in the manga causes his arms to explode many times; terror is part of his strategy. He was also incredibly skilled in the first part of the manga.

Lucy (Winx Club/2004): Victim of bullying, insect control (although not shown in the series), insecure about her appearance and femininity, with a turbulent relationship with her childhood best friend, a redhead.

I'm not saying that Wildbow was inspired; I think it's more a case of "Everything has already been written."