Pretty girl with a broken smile

Kirstie she's on top of the world right? Good education, good boyfriend, non divorced parents, money, house. Perfect life, one a lot of people would want.
When you first look at her you see a pretty girl with a pretty smile...but no one cares enough to look deeper because their all to jealous of her. Because she has the perfect life.
But is it really that perfect struggling with eating issues, parents that don't care, a brother who tried to kill her sometimes...Idk you better find out.