NSW Police have renewed calls for public assistance after reopening a 26-year-old Campbelltown cold case this week.
Tracey Valesini was last seen at Campbelltown Courthouse on January 8, 1993. She had been attending a custody hearing for her daughter, Crystal-Lee, then two.
The matter was to return to court on February 12, but Ms Valesini failed to appear. Her family never heard from her again.
According to Crime Stoppers NSW, Ms Valesini's family has made numerous attempts to contact her over the past 26 years.
Police have contacted various agencies and financial institutions to gather information about Ms Valesini's movements.
Ms Valesini hasn't accessed her bank accounts or received government benefits since December 1992, with the exception of a single deposit and withdrawal more than 12 months later.
Homicide Squad detectives launched Strike Force Sonning in 2001 to re-investigate Ms Valesini's disappearance and suspected murder.
A search warrant was conducted at her former home in Wentworth Falls in May 2001.
Police located blood during a forensic examination of the home's bathroom. It was believed to be Ms Valesini's blood.
A coronial inquest was held in February 2006.
The State Coroner returned a finding that Ms Valesini died between December 1992 and December 1993 of "injuries inflected upon her by another person".
The matter was referred back to the Unsolved Homicide Team for further investigation.
After a recent review, the case has again been re-opened.
The state government has offered a $100,000 reward for information that leads to the conviction of those responsible for Ms Valesini's suspected murder.
Anyone that can assist detectives is urged to call Crime Stoppers on 1800 333 000 or nsw.crimestoppers.com.au.