The Worst Thing She Ever Did — Alice Kuipers

All Sophie wants is to forget what happened last summer. But that's not easy when people keep asking if she's okay, and her mother locks herself behind closed doors for hours at a time. And now her best friend, Abigail, cares more about parties and boys than hanging out with Sophie.

Lost in memories of the life she once had -- before that terrible day -- Sophie retreats into herself. But it's only so long before she must confront the tragedy of her past so she can face the future.