The Disappearance of Emily H., by Barrie Summy, was published in 2015 by Delacorte.
Emily Huvar vanished without a trace. And the clues are right beneath Raine’s fingertips. Literally, Raine isn’t like other eighth graders. One touch of a glittering sparkle that only Raine can see, and she’s swept into a memory from the past. If she touches enough sparkles, she can piece together what happened to Emily. When Raine realizes that the cliquey group of girls making her life miserable know more than they’re letting on about Emily’s disappearance, she has to do something. She’ll use her supernatural gift for good…to fight evil. But is it too late to save Emily?