Matthew Grant Webster , an 18-year-old who acted as a bouncer at the event , pleaded Request guilty to her murder Committing_crime and was sentenced Legal_rulings to 20 years in prison with a 14-year non-parole period .

Guy Charles Wilson , the other bouncer and only other person aged over 18 at the party , pleaded Request guilty to assault ; a third male ( aged 15 ) pleaded Request guilty to having sex with a minor .