And Then Everything Unraveled by Jennifer Sturman

From the cover, you can tell this is chick lit, but I was in the mood for something light. Other than leading into a sequel (And Then I Found Out the Truth), this didn't disappoint. Delia is shipped off to live with her aunt in NYC when her mother's ship disappears close to Antarctica. Delia isn't sure what to expect, since she's never met her aunt(s) before, but she's sure she won't have to live there long. Delia insists that her mother is still alive, and starts receiving clues that she might be right. She has a voice mail of static from Patagonia. Her mother's laptop is wiped clean. And the oil company that her mother was researching starts acting funny. So Delia is on the hunt for her mom, and trying to survive a snooty NYC prep school at the same time. The book is pretty unrealistic, but, hey, I didn't care!