Detailed Explanation
The ending of Sharp Objects is a masterclass in horror. After Adora is arrested for Marian's murder, Camille takes Amma to live with her in St. Louis. For a moment, it seems like a happy ending—the damaged sisters escaping their toxic mother. Then Amma's new friend Mae goes missing. In the final scene, Camille discovers that Amma's dollhouse floor is made of human teeth—and some are fresh. Amma killed again because Mae was getting too close to Camille. The cycle of violence continues.