“Glass” by Ellen Hopkins

Crank. Glass. Ice. Crystal. Whatever you call it, it's all the same: a monster. And once it's got hold of you, this monster will never let you go. Kristina thinks she can control it. Now with a baby to care for, she's determined to be the one deciding when and how much, the one calling the shots. But the monster is too strong, and before she knows it, Kristina is back in its grips. She needs the monster to keep going, to face the pressures of day-to-day life. She needs it to feel alive.