Ash Good, 38, died in hospital on Saturday, April 13.
She grew up in Echuca and attended St Joseph’s College.
Her nine-month-old daughter, Harriet, is currently in hospital, having been stabbed by a man at the scene.
Reports say that in her final moments in the mall, Ms Good handed off Harriet to two men, hoping they would be able to save her.
Four women and a man died at the scene at Westfield Bondi Junction in the Sydney's eastern suburbs, and another woman later died in hospital.
Eight other people were hospitalised, one being a nine-month-old baby.
The attacker, 40-year-old Joel Cauchi, was shot dead by a senior police officer.
“She discharged a firearm and that person is now deceased,” NSW Police Assistant Commissioner Tony Cooke said.
The man was seen on CCTV entering the centre about 3.10pm, leaving, and then returning a short time later, when he attacked nine people, Mr Cooke said.
The Echuca Moama Basketball Association made a post on Facebook, sending its condolences to her friends and family.
“The Echuca Moama Basketball Assoc extends their sympathy and love to Ash Good’s family in this absolutely devastating time,” the post read.
“Ash grew up in Echuca and was a very talented basketball player.
“She played her juniors all with Echuca.
“She was a caring, loyal and adoring friend to many.”
Following the announcement of Ash’s death, there was an outpouring of community grief and support online.
A GoFundMe has been started by Ms Good’s friend Steven Foxwell.
As of 3pm on Sunday, April 14, the fundraiser had raised more than $55,000.
To donate to the fundraiser, head to gofundme.com/f/ash-good
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