Spoiler Alert - Click to Toggle
And we know everything is going to be ok at the end despite the catastrophe the little girl has been through including the gruesome death of her stepfather whom she apparently loved. "Hey, it's a sunny day and we're all still alive and I don't need my Pull-Ups any more!" I'm paraphrasing but that's the gist of the final scene. It would have been a better ending if John Cusack had replied "Yeah, but after what I've been through I think I might be needing some Depends sooner than I was planning."