After 38 years of mystery surrounding the teenager’s death, the startling detail was revealed at an inquest in Albury yesterday.

Bronwynne’s mother, Noel, told deputy state coroner Carmel Forbes that her daughter had once received a call with a muffled voice telling her: “Bronnie you are going to die.”

Mrs Richardson said her daughter believed a former boyfriend, Geoffrey Charles Brown, was responsible for the call.

“He would not accept the end of their relationship,” Mrs Richardson said.

Mr Brown and another person of interest in the unsolved case, Ross Eames, attended yesterday’s hearing.

Two other persons of interest, Max Martin and Kevin Newman, have since died.

Bronwynne Richardson was murdered near Horseshoe Lagoon, west of Albury, on October 12, 1973.

Bronwynne was involved in a relationship with Mr Brown when she was ­attending St Paul’s College at Walla.

The relationship lasted about seven months from September 1971 until April 1972 when Ms Richardson was aged 16.

The phone call ­happened after this breakup, anywhere up to 18 months before her death.

Bronwynne’s mother told the inquest her daughter had ended the relationship because Mr Brown was “quiet and moody”.

“Bronwynne became scared of Brown and decided to break off the relationship,” Mrs Richardson said.

Mr Brown was told to stay away, but would drive past the family’s Corowa residence and toot his car horn.

Mrs Richardson read a statement from the witness box after giving her evidence which vented the family’s grief.

“I am so very proud to say I am the mother of Bronwynne,” she said.

“The heartache has been enormous to all of us.”

She said her daughter’s death was tragic, a needless loss of life at such a tender age and in horrendous circumstances.

Mrs Richardson said she thought of her daughter every day.

“When Bronnie was taken from me, a part of me died that day,” she said.

Her daughter was a happy, charismatic girl, a caring human who lived to raise money for charity after being judged Miss Corowa Showgirl.

“We pray that it will haunt the perpetrators for the rest of their lives,” Mrs Richardson said.

“Our family life crumbled forever. Bronwynne’s murder affected her siblings enormously.”

There have been many years of anxiety and ­despair, waiting for justice so the family can put “rest in peace” on the headstone of her grave.

“I feel very fragile,” she said.

“This is the first forum I have had in 38 years to speak about our daughter.”