Glass by Ellen Hopkins

Kristina thinks she can control it—the monster she once let in. But meth has a voice that whispers louder than reason and hungers stronger than love. Now a young mother, she swears she’ll stay clean for her baby, yet one moment of weakness pulls her back into the spiral of addiction. As she chases the high that destroyed her before, the line between reality and ruin blurs, leading her deeper into a world where every choice costs more than she can afford to lose.