Actually, the victim can submit a Victim Impact Statement. Discuss doing so with the juvenile probation officer, and be insistent if necessary. Again, if I were submitting such I would put emphasis on the initial aprehension for what they might have done with the stolen weapons (yes, use that word) and the apprehension I continue to live with based on their prior criminal and drug abuse record as it has been made known to you by their parents and other children in the neighborhood (again, yes, use those words).
Even if the juvenie probation officer tells your father he cannot submit a Victim Impact Statement (wrong, but it might happen) he can walk into the Clerk's Office and hand-deliver one. All he needs to know is the yute's name - and he should already have that and the case number based on the subpeona for witness the Commonwealth issued (they did issue them, didn't they?).
stay safe.