Homicide Squad detectives have released a video of the Balga woman who died in hospital after she was assaulted on Balga Avenue earlier this month.
The vision shows Louise Langhorn entering a store in the days before the February 6 incident in which a passer-by came to her aid and scared off the offenders.
The 59-year-old was admitted to Royal Perth Hospital a few days later after the Good Samaritan had driven her home to her Balga unit after the attack.
She did not contact police but while in hospital reported she had been assaulted in Balga Avenue near Redcliffe Avenue. She died in hospital on February 10.
In the video footage she is wearing the same clothes police believe she was wearing on the day of the assault.
Louise was also known to frequent the Balga Plaza Shopping Centre on most days, and regularly used a taxi to travel to and from there.
Anyone who has any information to help detectives is asked to call Crime Stoppers on 1800 333 000.