Christina Baker Kline said this quote

Molly learned long ago that a lot of the heartbreak and betrayal that other people fear their entire lives, she has already faced. Father dead. Mother off the deep end. Shuttled around and rejected time and time again. And still she breathes and sleeps and grows taller. She wakes up every morning and puts on clothes. So when she says it's okay, what she means is that she knows she can survive just about anything.