Lollipops were handed out to mourners as The Wiggles song Three Little Monkeys played at the funeral for three young girls, their mother and grandmother, all allegedly murdered by the children's father.
Three-year-old Charlotte, two-year-old twins Alice and Beatrix, and their mother Mara Lee Harvey, 41, were allegedly killed by Anthony Robert Harvey, 24, at their home in Perth last month.
He then allegedly murdered his mother-in-law Beverley Ann Quinn, 73, when she came to visit them at their house in Bedford the next morning.
The caskets were adorned with blankets and each had a different item of personal significance - Ms Quinn had a ball of wool, Ms Harvey had an encyclopaedia, and the children had toys.
Ms Quinn was so organised, she had previously arranged the songs for her funeral, choosing two Daniel O'Donnell songs to open and close the service, but no one was prepared for the deaths of her daughter and grandchildren.
Her youngest daughter, Taryn Tottman, gave a 20 minute eulogy, drawing laughter as she shared stories of adventure and mischief.
She described her mother, who was born in New Zealand, as a "mischievous rebel" during her childhood, who was burnt by boiling water at 18 months and began wearing glasses at the age of three.
Ms Quinn always put her family first and gave her daughters every opportunity possible, Ms Tottman said.
"Mum was everything to us," she told the 200 mourners.
Ms Tottman said her mother was the canteen lady at school and later helped with aged care and in 1997, cared for her dying husband.
Within four years, Ms Quinn had become a grandmother of six.
"All she ever wanted to do was help others."
Ms Tottman said her sister was adventurous and became a travel consultant, which took her all over the world.
She later worked in mining, then in 2014 started the romance that led to marriage and children.
Charlotte was remembered as an outgoing and bubbly child, with a loud and confident singing voice.
She was also described as an old soul and intelligent.
"We are now left in a world that is a little quieter, less energetic and a lot less bubbly now that our sweet little Charlotte has gone, but she will certainly be remembered with a happy heart," Ms Tottman said.
Alice was remembered for her smile and fearlessness, while Beatrix was the quieter twin with a cheeky side.
Ms Tottman recalled the last time she saw Beatrix she received the most heart melting hug.
"That is now a memory and a moment I will cherish forever," she said.
"The world is a lot colder now that it will be missing Beatrix's hugs."
The family thanked detectives and the wider community for their love and support, with Ms Tottman relaying how it had restored her faith in humanity.