I'm not missing

"It's senior year, and Miranda Black's best friend, Syd, has run away--suddenly and inexplicably, leaving behind nothing but a pink leopard print cell phone with a text message from the mysterious HIM. Everyone wants to know why Syd left, but the truth is, Miranda has no idea. When Miranda's mother abandoned her as a child, Miranda had found shelter in her friendship with Syd, who wore her own motherlessness like a badge of honor. Now Miranda's been left behind again, left to untangle the questions of why Syd left, where she is--and if she's even a friend worth saving, all while stumbling…