Ms Ferullo died soon after her former partner James Bill Payet (48) entered the salon and attacked her and her then pregnant daughter, 23-year-old Selina Bello.
Last week, Payet pleaded guilty to five charges including unlawful grievous bodily harm, murder and depravation of liberty. He is due for sentencing on May 13.
Police eventually arrested Payet at Murdoch Hospital about 4pm that day.
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READ NOWHis charges relate to the incident at the salon as well as an earlier incident in Success that day.
In an interview with the Southern Gazette last November, witness Peggy Kew (67) described how Payet repeatedly lashed out at Ms Ferullo.
Ms Kew, who received a St John Ambulance Community Hero Award, used a salon chair as a weapon and shield during the attack.
The Como resident said she ‘just reacted’ when Payet began demanding Selina tell him the whereabouts of Angela before launching his assault.
‘There was a big bang and Selina was on the floor,’ Ms Kew said.
‘I had colour setting in my hair, I must have looked like a mad woman but I jumped up and said ‘what are you doing, she’s pregnant’,’ she said.
Mrs Kew, who said adrenaline must have helped her lift the heavy chair she used to fight Payet off, received a blow to the head and stab wounds as she pleaded for him to ‘get out, haven’t you done enough?’.
Ms Bello recovered from her injuries and gave birth to a baby boy, Emilio, in November.
She spoke to the Gazette just four weeks after the incident and told of her determination to keep moving on and not let her mother’s legacy (the salon) fail.
Ms Bello took to Facebook after the plea.
‘Today we finally received some justice, guilty pleas were entered and now we can finally move forward from the hell we have endured for the past seven months,’ she wrote.
‘Thank you to everyone who has supported myself and my family during this time.
‘Mum, not a day goes by that we don’t think about you and the great loss we have experienced, hopefully now you can rest easy knowing that justice has and will be served, love you always.’