The mother of Becky Godden from Swindon has vowed not to give up until her killer is brought to justice. She made the promise at her daughter's inquest today.
Becky's remains were found in a shallow grave in Gloucestershire. Christopher Halliwell had taken police there, but a judge ruled that he couldn't be charged with her murder because of errors in police procedure.
Halliwell is however serving life for the murder of another woman, Sian O'Callaghan.
The inquest heard the last official sighting of Becky was on December 27th 2002. That was by a Wiltshire Police community officer in the Manchester Road area of Swindon.
Karen Edwards, Becky's mother, tried to formally report her missing some years later but was advised by an enquiry officer that as Becky had not been seen for more than five years, she would be unable to do so.
The officer suggested to Mrs Edwards that she try missing persons charities.
Det Sgt Peter Ritson says there was no evidence of a cause of death.
He said the field where Becky's remains were found was a hard soil. She was buried in only 8 inches of soil.
The inquest into the death of Rebecca Godden is opening. Her body was found in a field near Eastleach in the Gloucestershire Cotswolds in March 2011.
Detectives were led there by killer Chris Halliwell. He had just been arrested by police for the disappearance of Sian O'Callaghan.
Halliwell, a minicab driver from Swindon, had been under surveillance after Sian disappeared in March 2011. He was arrested by Detective Supt Steve Fulcher.
Halliwell refused to speak to arresting officers, so DS Fulcher asked for him to be taken to Barbury Castle, an Iron Age hillfort near Swindon. There, he admitted killing Sian. He later took DS Fulcher to Sian's body, and then admitted killing a woman years before - Becky Godden.
Chris Halliwell took DS Fulcher to the field 40 miles away from Sian's body. He climbed over a distinctive dip in teh drystone wall and paced into the field, counting steps. He said the girl, whose name he didn't know, was buried there.
Her remains were found a few days later. DNA samples from the bones confirmed the remains were of Becky Godden.