Shattered — Sarah N. Harvey

March has a perfect life: beauty, popularity, a great job, a loving family and a hot boyfriend. So when she discovers that her boyfriend is cheating on her, she is hurt and enraged. When she lashes out at him, he falls and is badly injured. March panics, flees the scene and then watches her perfect life spiral out of control. In a misguided attempt to atone for her crime, March changes her appearance, quits her job and tries to become invisible until an unlikely friendship and a new job force her to re-engage with life.