And Then Everything Unraveled — Jennifer Sturman

Meg Cabot called this rich, witty YA mystery about a girl, her missing mother, and New York City "a delight...pure fun."Delia Truesdale has no idea her life's about to change forever. She's too busy enjoying the California summer. Her internet tycoon mother, T.K. Truesdale, is out of town, and that means Delia can spend all her time at the beach, surfing. That is, until everything unravels.Her mother suddenly goes missing, and everyone thinks she's dead - excpet Delia, who knows T.K.'s way too organized to simply disappear. But Delia's still sent to New York to live with her two aunts - a downtown bohemian and an uptown ice queen.