My read is that the kid was 13. He was big guy who made friends with someone his size, a bad 17 year old.
The 17 year old was the leader. Daniel was a follower. He made a terrible mistake, but that should not be the end of his life. He screwed up, in a seemingly unforgivable fashion.
But, who is he now? What did he learn from that colossal mistake? What has he learned over the last 5 years? What values does he have now? Has he reformed himself?
We don't know the answer to any of these questions.
What would Jesus do, someone asked? Look no further than what He did on the Cross.
If Daniel has confessed his crime, done his time, and now has a better sense of right and wrong, give the kid a break. Is that asking too much?