THE mother of murdered teen Eliza Jane Davis has spoken out about a proposed documentary based on the crime.
Two friends killed Eliza in a Collie house in 2006.
The then 16-year-old murderers were sentenced to life in prison with a 15-year non-parole period.
Erin Davis, Eliza's mother said on her Facebook page this week that a detective called to tell her about the documentary.
"All you people are sick , if you have a daughter, think about her being strangled by her so-called friends," Ms Davis wrote.
"Not one of you would like to walk in my shoes. My whole life has turned to sh...
"I bet if it was any of your daughters you would want to see and know the truth.
"You have no right to exploit me and my daughter and need to think of the lives you are tormenting."
Ms Davis made reference to the 2011 Swan State Theatre Company play The Damned, which she said was based on Eliza's murder.
The play was centralised around a girl called Melody, who is killed by two female friends, strangled with a speaker wire and disposed of under a house.
The murderers, Natasha and Kylie, then walk into police stations, 250 kilometres apart, to confess their crime.
The play was also influenced by a murder in Lathlain shortly after Eliza's murder, when a teenage girl was killed by a lesbian couple.
Ms Davis was particularly angry about the fact that the state government provide funding to the theatre company.
"You make me sick ... making money off people making this sh.., this is wrong," she said.
"... there should be laws to protect victims of crime."
Mrs Davis was also critical of Premier Colin Barnett and his government.
"I work my guts out, pay tax and you can get up there and donate tax money to a theatre company to go and make a play about the murder of my daughter.
She said police would not show her information about her daughter's autopsy.
"How and where are this company getting information from if I, the mother, can't see it?" she asked.
WA Police spokesman Neil Stanbury said they would not cooperate with the producers of the documentary.
WA Police had the best interests of victims of crime in mind, he said.
A Swan State Theatre Company spokesperson said the company was not involved with the new documentary.
Ms Davis has been contacted for further comment.
