Hannah Clarke and her three children were farewelled in a single white coffin, adorned with a pink flowers, in a Brisbane church on Monday.
The funeral for Ms Clarke and her children Laianah, 4, Aaliyah, 6, and Trey, 3, was held three weeks after her estranged husband Rowan Baxter doused his family in petrol and set them alight.
Photos of the the family played on a loop and portraits of Hannah and her children were displayed on the stage as mourners watched on.
‘Amazing’ mum and kids farewelled
Ms Clarke’s brother Nat fought back tears as he told friends and family of his “smart, beautiful and caring” sister who always had his back.
“I loved you from the day I was born,” he said.
“We were always there for each other.”
Mr Clarke referred to his late sister as “one of the greatest mum’s to walk this earth”.
“You were so amazing, Han. It’s no wonder your kids were just the same,” he said.
Mr Clarke described his nieces and nephew as beautiful children who reflected their mum.
"Aaliyah, you were everything a big sister should be, brave, strong and quite bossy," Mr Clarke said.
"Laianah, you were the ratbag, the little middle. There was so much of Hannah in you. You were beautiful, sweet and caring with an amazing imagination. You were the sweetest kid and a beautiful mermaid.
"Trey, mother's little man and her best surprise.
"I am so sorry I couldn't protect you."
Among those paying tribute to the young mum, was friend Lou Farmer.
"Han was the best role model for her daughters; she knew her worth," Ms Farmer said.
"Hannah, the impact you had on people shows how special you are."
Ms Clarke’s childhood friend Nikki Brooks said she could “scarcely remember” life before or without her.
“Han was one in a million – kind and selfless, fierce but so funny,” Ms Brooks said.
“She was the yin to my yang.”
Butterfly stickers were placed on the coffin before it was carried out by Ms Clarke’s friends and family.
The service was being streamed into an adjoining cafe.
The attack that killed Ms Clarke and her family shocked the nation and has sparked calls for greater efforts to bring an end to domestic violence.
Hannah was on fire as she leapt from the driver's seat screaming "he's poured petrol on me" and people rushed to try to put out the flames.
She died in hospital hours later with burns to 97 per cent of her body.
Friends of Hannah who went to school with her told AAP she had been too scared to leave Baxter, who controlled every part of her life, as she feared he would harm her and the children.
Prime Minister Scott Morrison, Queensland Premier Annastacia Palaszczuk, Police Commissioner Katarina Carroll, senior police officers, firefighters and paramedics were among those who have gathered in the rain to pay their respects to the family.
Hannah's family asked that the details and location of the family's funeral service not be released.
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