Ms Barreau Barreau disappeared 23 years ago when she went to buy a card . The girl 's parents , from Morphett Vale in SA , have made a fresh appeal . Paula and Leon Barreau have accepted that their daughter was murdered . But the couple want answers to what happened to their lost little girl . Rhianna said she had sleepless nights after Ms Barreau 's disappearance . SA police have launched campaign to solve a number of its cold cases . There is a one-million-dollar reward for information leading to a conviction .
Rhianna Barreau disappeared 23 years ago when she went to buy a card . The girl 's parents , from Morphett Vale in SA , have made a fresh appeal . Paula and Leon Barreau have accepted that their daughter was murdered . But the couple want answers to what happened to their lost little girl . Ms Barreau said she had sleepless nights after Rhianna 's disappearance . SA police have launched campaign to solve a number of its cold cases . There is a one-million-dollar reward for information leading to a conviction .