The parents of three children who were allegedly killed at the hands of a drunk and drug-addled driver have paid a gut-wrenching tribute to the youngest of the victims on what would have been her ninth birthday.
Sienna Abdallah was mowed down alongside her siblings, 13-year-old Antony and 12-year-old Angelina, as well as their 11-year-old cousin Veronique Sakr, on February 1 while walking to their local supermarket in Oatlands, in Sydney's north-west, to buy ice cream.
The children were celebrating their cousin's birthday on the day of their deaths - and it was the first time they had been given permission to walk to the store without parental supervision.
Seven children were struck just before 8pm on Bettington Road, one of the main thoroughfares through Oatlands, allegedly by Samuel William Davidson - the drunk son of a former NSW detective - who police allegee had drugs in his system at the time.
On Sunday, Sienna's parents Danny and Leila Abdallah, celebrated her first birthday since the devastating crash.
'You are my baby girl and my princess,' a tribute to the birthday girl read.
'You filled our lives and our hearts with love and joy. Today we were celebrating your birthday, but we didn't have the birthday girl among us.
The Abdallah family (pictured) are seen before tragedy struck on February 1, killing three of their six children and their niece
Further footage shows Sienna in her gymnastics outfit (pictured), cheering about attending a competition and fearlessly tumbling on the concrete - as well as plenty of videos singing her favourite songs
The tribute began with a video taken at Sienna's last birthday, as she excitedly blew out the candle of a cake (right) and featured plenty of unseen family photographs
'We love and miss you dearly... Our hearts are broken and we believe that we'll be reunited with you in heaven.'
The post was accompanied by a video slideshow including never-before-seen videos and photos of the aspiring gymnast.
As Ed Sheeran's 'Photograph' played in the background, the tribute began with a video taken at Sienna's last birthday, as she excitedly blew out the candle of a cake.
The video then switches to a clip taken on a boat, as her doting dad asks for a kiss.
Sienna obliges, before turning to the camera and cheekily wiping her mouth and flashing a grin.
The couple have previously recalled how 'cheeky' Sienna was. They referred to her as their 'diva', even at just eight years old.
Further footage shows Sienna in her gymnastics outfit, cheering about attending a competition and fearlessly tumbling on the concrete - as well as plenty of videos singing her favourite songs.
The couple finished the message by describing heaven as 'lucky' to have Sienna.
'I am sure that Antony, Angelina and Veronique are beside you.'
As Ed Sheeran's 'Photograph' played in the background, the tribute began with a photo of Sienna as a toddler (pictured)
Mrs Abdallah told media she 'forgives' Davidson (pictured), despite him allegedly being three times over the legal blood alcohol limit when his Mitsubishi Triton mounted the kerb, killing three of her children
Pictured: Mr and Mrs Abdallah with their three daughters. The eldest (left) and youngest (centre) were both killed in the horror crash
Just six weeks ago, Mr and Mrs Abdallah celebrated their eldest son Antony's 14th birthday.
They made a similar video for his special day, describing the teenager as 'a saint'.
The parents of all the children who were hit were on the scene within minutes, but it was too late.
Mr recalled the exact moment he realised something had gone terribly wrong.
'It was like a warzone,' he said.
'Some guy ran up to me and he kept saying ''we've got to tell their parents''... and I said, ''mate, these are my kids''.'
'I saw them. I went up to each one and I knew they were gone.'
Mr Abdallah tried in vain to resuscitate Antony, his eldest son, with mouth-to-mouth.
He found Angelina, who he realised was already gone. Then he saw Sienna, his baby girl.
The video then switches to a home video taken on a boat, as her doting dad asks for a kiss. Sienna obliges, before turning to the camera and cheekily wiping her mouth and flashing a grin. The couple have previously recalled how 'cheeky' Sienna was. They referred to her as their 'diva', even at just eight years old
Antony, 13, Angelina, 12, and Sienna Abdallah, eight, (pictured, left) and their cousin Veronique Sakr, 11, (right) were allegedly mowed down by drunk driver Samuel William Davidson as they walked to get ice cream
Leila Abdallah (pictured with her three girls) shared this photograph in the tribute video
The couple have previously recalled how 'cheeky' Sienna was. They referred to her as their 'diva', even at just eight years old
'Sienna wasn't good at all,' he said. 'Veronique wasn't good.'
As more police and emergency services poured in, Mr Abdallah was pushed to the side. He watched as each of his children, and finally his niece, were covered with a cloth.
Once he realised there was nothing more he could do at the scene of the crash, Mr Abdallah headed directly to the hospital, where his middle daughter Liana was recovering.
'She was there asking ''where's my brothers and sisters'',' he said.
Initially, he decided it would be best to lie to her, and assured her that her siblings were simply resting in another room.
But on the advice of a nurse who said she would never trust him again if he was dishonest, Mr Abdallah returned to her room to tell her the truth of the matter.
'I said your brother and sisters have gone to be with God,' he said. Liana was concerned about the prospect of having to be the big sister and devastated by the loss.
'That was probably the hardest thing in my life. When you're a dad, you've got to step up. Even when you've lost half your family. Because you don't want to lose all your family,' he said.
Leila Abdallah (pictured) is seen grieving the loss of three of her children after they were allegedly ploughed into by a drunk driver in Oatlands in Sydney's western suburbs
As Angelina Abdallah (left), 12, lay lifeless just moments after a horror car crash, Margret Primc sat with her and stroked her head before planting a kiss on her forehead
Police allege Davidson had been drinking with friends at home before he got behind the wheel of his ute. He drove to a Caltex service station about 1.8km away from his Oatlands home to get cash. While on his way home, he allegedly ran a red light before crashing into a group of seven children
Liana's mother, Leila, praised her daughter for the way she handled the tragedy.
'She's becoming resilient,' Mrs Abdallah said. 'She has seen the toughest. She's like ''what is there to be scared of anymore''.'
Also at the scene when the family arrived was Davidson, the man accused of killing the children.
The 29-year-old builder faces up to 25 years in prison if convicted of more than 30 offences, including four counts of manslaughter and high-range drink driving.
Davidson allegedly blew 0.150, three times over the legal blood-alcohol limit, after the Mistubishi Triton mounted the kerb and slammed into the children.
Witnesses told The Daily Telegraph Davidson, who was also charged with running a red light, had allegedly been travelling on the wrong side of the road moments before the crash.
His passenger gave CPR to the victims while Davidson stayed at the scene until police arrived.
CCTV footage captured the vehicle travelling at speed down the street minutes earlier.
CCTV footage taken outside the home where the crash took place. The never-before-seen vision showed the children stopped in a circle and chatting animatedly on the sidewalk moments before disaster struck
Mrs Abdallah (pictured, centre) is seen as she arrived at the scene on the morning after the crash, after the children's father Daniel said he was 'numb' from their deaths
Samuel William Davidson (pictured being taken away in handcuffs and shirtless) was charged with 33 offences including manslaughter
* Seven children were riding their bikes along the footpath of Beddington Road, Oatlands, just before 8pm on Saturday, February 1
* The children were on the way to buy ice cream when a Mitsubishi 4WD allegedly ploughed into them
*Residents raced to children's aid and frantically tried to save them while waiting for emergency services
*Four children - including a boy, two of his sisters and their cousin - died at the scene
* Another boy, ten, was rushed to hospital with critical head injuries and remained in a coma for two-and-a-half months
* Two girls were taken to hospital with non life-threatening injuries
*Male 4WD driver, a 29-year-old from Oatlands, underwent roadside breath test and returned positive result
*The alleged driver Samuel Davidson was arrested and taken to Castle Hill Police with his 24-year-old male passenger
*Davidson was charged with four counts of manslaughter
Police allege the driver had been drinking at home with friends before he got behind the wheel to withdraw cash at a service station.
He was driving back home from a Caltex on Green Street when he allegedly ran the red light before ploughing into the group of children at about 8pm.
One female driver said she witnessed the car careening towards the direction of pedestrians and honked her horn to alert the driver, to no avail.
Davidson was arrested at the scene and remains in custody. He was seen being taken away in handcuffs and shirtless. Before the crash he was not known to police.
Davidson has been charged with 33 offences in total including four counts of manslaughter, four counts of dangerous driving occasioning death while driving under the influence, four counts of dangerous driving