Eliza was a talented schoolgirl who wanted to become a psychologist or a forensic scientist.
She had been friends with her killers - a psychologically-scared orphan and a drug-addicted Goth, who had a morbid obsession with death and had practised killing on two kittens.
All three teenagers had danced, smoked cannabis and snorted ``ice'', or methylamphetamine, together at a party in Collie on June 17, 2006.
They then reported Eliza missing and pretended to help with the search before finally turning themselves into police after deciding the grave was so shallow discovery was inevitable.
"We discussed what would happen if we sort of killed Eliza ... we both admitted we wouldn't care,'' one of the girls said in her subsequent interview with shocked police.
"I said do you want to? ... she said, yeah, and we did it.''
http://www.news.com.au/perthnow/stor...005369,00.html