Ten-year-old Matilda and 87-year-old Holocaust survivor Alex Kleytman were among 15 people killed when two gunmen who opened fire at Hanukkah celebrations on Sunday night.
Funeral services will be held for both victims in Sydney's east on Thursday.
The young girl has been remembered by her school for choreographing dances on the playground and bringing light to those around her.
Not far from where she was killed, her parents - originally from Ukraine - spoke at Bondi Pavilion of their heartbreaking loss.
"I couldn't imagine I would lose my daughter here," her mother Valentyna told a swelling crowd surrounded by a sea of floral tributes.
Her father Michael named her Matilda "because she was our firstborn in Australia".
"I thought that Matilda was the most Australian name that could ever exist," he said.
"So just remember - remember her name."
Meanwhile, the wife of the Ukrainian-born Holocaust survivor has remembered Mr Kleytman for his resilience and courage after he moved to shield her from gunfire in his last moments.
Australian Federal Police Commissioner Krissy Barrett vowed to support the Jewish community in its time of need as its members continue to bury their loved ones.
"It is hard not to be moved by the weight of grief that is hanging over Sydney," she said.
"We have seen photos of the beautiful and joyful faces now lost, and in them, we see our own loved ones, we see the innocent, and we see our fellow Australians."
Naveed Akram, 24, and his father, 50-year-old Sajid Akram, are accused of using long-arm guns to fire at a crowd of people on Sunday night.
Naveed, who was critically injured after being shot by police and spent days in a coma, was charged on Wednesday with 15 counts of murder - one for each of the victims - and one count of committing a terrorist act - both charges have a maximum penalty of life imprisonment.
He did not appear or apply for bail during a brief court hearing and the case was adjourned until April.
His father, a licensed gun owner, died at the scene.
Naveed is also charged with 40 counts of wounding with intent to murder and single counts of discharging a firearm in public, causing a public display of a prohibited terrorist symbol and placing an explosive in or near a building with intent to cause harm.
Early indications pointed to a terrorist attack inspired by Islamic State, NSW Police said.
Investigators were forensically examining "significant digital material" and further search warrants would be executed, the AFP commissioner said.
Philippines authorities are investigating whether the gunmen undertook military training during a trip to the country.
Immigration records reportedly show the pair travelled to Davao City in Mindanao, a region with a history of Islamist militancy, during a November trip.
But national security advisor for the Philippines Eduardo Ano has dismissed media reports that portray the country's south as a hotspot for extremism.
Attending a memorial at the Chabad of Bondi synagogue alongside Israel's Diaspora Affairs Minister Amichai Chikli on Wednesday evening, former prime minister Scott Morrison said the charges were the first step towards closure.
"Fifty-nine charges is the least, I hope," he told AAP as he entered the synagogue.
Other victims include a retired police officer and a father who ran at the gunmen, hurling a brick, while dozens of others were injured.
Seventeen people remain in hospital, including one in a critical condition.
Four others are critical but stable, including Constable Scott Dyson, who underwent surgery on Wednesday.
with Reuters
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