Just to explain the POV of the state, i.e. "why dont they release him if the victim is fine with it":
One of the reasons for incarcerations is vengeance, and another one is protecting the community from further crime.
If the victim forgives the perpetrator, you could argue no vengeance is necessary anymore; however, this person could still be a danger to future victims.
A life sentence for a 13yo is harsh of course, I am just trying to explain why the courts not letting him go after the victim forgave him is not as surprising as one might think at first.
One of the reasons for incarcerations is vengeance, and another one is protecting the community from further crime.
If the victim forgives the perpetrator, you could argue no vengeance is necessary anymore; however, this person could still be a danger to future victims.
A life sentence for a 13yo is harsh of course, I am just trying to explain why the courts not letting him go after the victim forgave him is not as surprising as one might think at first.