The Dive From Clausen's Pier by Ann Packer
Carrie Bell was born and raised in Wisconsin. She's had the same best friend, the same good relationship with her mother, the same boyfriend for as long as anyone can remember. She is already quietly bored with Mike when he is horrifically injured in a diving accident at Clausen's Reservoir. Now the future that Carrie was only beginning to rebel against looks set in stone. Everyone thinks they know what Carrie will - and ought to - do. But Carrie is caught in a maze of moral dilemmas and is forced to question everything she thought she knew about herself. It is a moment of terrifying confusion, but also of mesmerising possibility.