Aggravation and mitigation form part of sentencing submissions. I’m unaware if friends can appear for convicted persons in Australian courts.
While we don’t know much about RH at all, here’s a list that outlines common mitigating circumstances.
(a) the injury, emotional harm, loss or damage caused by the offence was not substantial,
(b) the offence was not part of a planned or organized criminal activity,
(c) the offender was provoked by the victim,
(d) the offender was acting under duress,
(e) the offender does not have any record (or any significant record) of previous convictions,
(f) the offender was a person of good character,
(g) the offender is unlikely to re-offend,
(h) the offender has good prospects of rehabilitation, whether by reason of the offender’s age or otherwise,
(i) the offender has shown remorse for the offence by making compensation (reparation) for any injury, loss or damage or in any other manner,
(j) the offender was not fully aware of the consequences of his or her actions because of the offender’s age or any disability,
(k) a plea of guilty by the offender
(l) the degree of pre-trial disclosure by the defence,
(m) assistance by the offender to law enforcement authorities
The only ones which may apply would appear to be (e) and (f). He’s going to be locked up for a long, long time, I hope.
I just found a good article on the sentencing process in South Australia.
http://sa.criminallegal.com.au/crimes/the-sentencing-process-south-australia/#