The family of a young hairdresser and model killed in a fiery crash have no idea how she knew the men in the sportscar which crashed as it sped through narrow streets in central Sydney.
Bree Keller is being remembered as "beautiful" and "bubbly" after being incinerated along with brothers Steve and Jeff Nasr, 31 and 39, when the $200,000 car flipped and burst into flames just before 3am on Saturday.
Grieving friends and loved ones took to social media on Wednesday to remember Ms Keller, 22, as "beautiful, bubbly and gorgeous".
Her stepfather, Peter Francis, told News Corp Austalia her family was still trying to work out how she came to be in the car with the Nasrs.
"We have no idea who these people were," he said.
"Bree was a very attractive girl, both inside and out. She had never been in trouble. She was a delight to be with and had lots of friends.
"She was a lovely, bubbly person ... she was a free spirit and we miss her dearly."
An ex-boyfriend who said he went out with Ms Keller for eight months said she had a "heart of gold".
"She wanted the best for the people she cared about," Christian Avant wrote on Facebook.
"You only had to spend 2 mins with Bree to be infected with her bubbly, carefree and excitable way of life. She made everyone smile."
Ms Keller's social media presence shows she worked for Edge Models and was from Narrabeen.
Superintendent Paul Pisanos said the three victims in the car were effectively "burnt alive".
It's not known how long it will take to formally identify Ms Keller's body.
The only survivor of the accident, Joseph Bagala, is in a stable condition in hospital after being pulled from the passenger seat of the burning wreck by police.
The 39-year-old from Leichhardt was taken to St Vincent's Hospital with extensive injuries to his head and face and several broken ribs.
It's believed the newly purchased high-performance Nissan GTR travelled down Goulburn Street at speed before the driver lost control and hit an overpass barrier.
It's not clear which brother was driving when the car flipped and landed on its roof outside the Novotel Rockford hotel and ignited.
"We may have lost our brothers but Heaven gained two Angels and God's Army grew with two more loyal Soldiers!!!" Steve and Jeff's brother Andre Nasr wrote on Facebook.
Originally published as Family seek answers over fiery fatal crash