I'm a librarian who loves anime, manga, and reading a wide variety of genres.
I went looking for more interesting sounding YA or Middle Grade mysteries or thrillers and came across this.
It stars a 13-year-old (?) girl named Emma. She's learned that she was likely the last person to see her former best friend Abby before her sudden disappearance on Saturday. Something soured between the two of them a year or so ago - Emma got bullied for being a "freak" who played make-believe with Abby. One of the worst bullies was a girl named Karen, and at some point Emma had enough and asked her dad to transfer her to a new school, heavily implying that the reason she wanted the change was because Abby had gotten too wild for her.
So far, while I understand Emma's desperation to fit in, she also frustrates me a little.