The Good Girls by Claire Eliza Bartlett

One of Us Is Lying meets Sadie in this twisty, feminist thriller for the Me Too era.
The troublemaker. The overachiever. The cheer captain. The dead girl. Like every high school in America, Jefferson-Lorne High contains all of the above.
After the shocking murder of senior Emma Baines, three of her classmates are at the top of the suspect list: Claude, the notorious partier; Avery, the head cheerleader; and Gwen, the would-be valedictorian.
But appearances are never what they seem. And the truth behind what really happened to Emma may just be lying in plain sight. As long buried secrets come to light, the clock is ticking to find Emma's killer-before another good girl goes down.