[gojomo]

My thoughts were similar: if the parenting is assigned most of the blame, maybe the parents should be serving the jail term? (I'd hate that as a general precedent – even good parents can yield a criminal child – but if in this case the parents have effectively embraced that culpability...)

Perhaps civil suits, leveraging the criminal case argumentation, can approximate that outcome.

[cookingrobot]

I'd love that as a general precedent. Either the kid is tried as an adult, or the parents are tried in their place. It should be the parents' job to protect society from their children.