If you want to know more about Anabelle(by the way I changed her name to Miss Raquel Richard), here is her biography:

Raquel is a kind teenager who is obsessed with the murder of her half sister Dolores, three years ago

Raquel Richard is a 17-year-old teenager whose life is dominated by solving the murder of her half sister, Dolores Harris. Dolores was suffocated in 2017 and the killer was never brought to justice.

She is American who defines herself as straight. She is currently at school.

Physically, Raquel is in good shape. She is very short with light skin, auburn hair and blue eyes.

She lives in a middle class neighbourhood. Her father left when she was young, leaving her with her mother, who was an addict.

Raquel goes to Roosevelt Franklin School, where her favourite subjects are chemistry, biology and medicine. She loves her teacher Ms Lewis but hates Mr Ryan whose interests include putting children in detention for no reason.

Raquel's best friend is a teenager called Della Stewart. They have a very firey friendship. She also hangs around with Lily Clarke and Mae Singh. They enjoy listening to music together.

Here’s the lovely article that inspired this episode.