It's one of the most heartbreaking scenes of the movie: Nic's step-siblings, Jasper and Daisy, are fighting because Jasper's "savings" disappeared and he blames his younger sister. It's clear to the viewers (and to David) that Nic is responsible for this horrible act. Although he denies stealing from his brother, the conversation leads to an outburst and Nic eventually leaves the house. While the movie doesn't further explain what happened to Jasper's money, in the book and in real life, Nic ends up returning the $8 with an emotional note in the mail.
"I'm looking for a way to say I'm sorry more than with just the meaninglessness of those two words. I also know that this money can never replace all that I stole from you in terms of the fear and worry and craziness that I brought to your young life. The truth is, I don't know how to say I'm sorry. I love you, but that has never changed. I care about you, but I always have. I'm proud of you, but none of that makes it any better. I guess what I can offer you is this: As you're growing up, whenever you need me — to talk or just whatever — I'll be able to be there for you now. That is something that I could never promise you before. I will be here for you. I will live, and build a life, and be someone that you can depend on. I hope that means more than this stupid note and these eight dollar bills."
It's a powerful moment in the memoir when both Jasper and David realize that Nic is truly committed to fighting his addiction, and although it wasn't included in the movie, it's something Jasper (and the readers) will always remember.
