Lost It by Kristen Tracy

Tess Whistle is a high school junior with ridiculous problems. Her best friend is plotting the annihilation of a neighbourhood poodle. Her parents are newly-born-again Christians who just moved to a survivalist Outward Bound–type camp in Utah. And Tess is about to lose her virginity—under a canoe—to her serious boyfriend, Ben Easter.

Luckily, none of these dramatic turns spells catastrophe. Because Tess Whistle is a high school junior who is about to discover that, ridiculous as her life may seem, she is finding out exactly who it is she wants to be.