The father of Queensland girl Indie Armstrong, killed by an out-of-control car in a car park, has described her as his "moon and back".
Jason Armstrong posted the heartbreaking message below a black and white photo of the six-year-old after she was fatally struck on a pedestrian crossing at the Nambour Mill Village complex on Sunday.
Indie was crossing with her older sister Lily, 8, and grandmother Sandy, 57, when an 86-year-old woman lost control of her car and hit them at speed, while in reverse.
Her mother, Emily Armstrong, watched the catastrophic scene unfold but escaped injury.
Witnesses have said the car was "going like a bullet", and it appeared the elderly driver hit the accelerator instead of the brake.
Lily, who suffered a lower limb injury, is in a stable condition at the Sunshine Coast University Hospital while Sandy is in a critical condition in intensive care after undergoing surgery.
Support is flooding in for the Sunshine Coast family, with a gofundme page set up to cover funeral and medical expenses already attracting almost $38,000 in donations.
Local families rugged up against the cold on Sunday night to attend a candlelight vigil for Indie while flowers, teddy bears and handwritten messages have been left at the site on Monday.
Her North Arm primary school principal, Kelly Edgar, paid tribute to the little girl and said the entire school was shocked and saddened by her death.
"Indie was an enthusiastic, loving, friendly young girl who will be greatly missed," Ms Edgar said in a statement.
Police, who continue to question the driver about the incident, say it's had a major affect on the first responders.
"It's such a tragic set of circumstances," Superintendent Darryl Johnson told reporters.
"It takes its toll on our emergency services and the police are no different; they are feeling it today."
Paramedic Ryan Hansen was among the emergency services personnel on the scene, and gave a sense of the chaos.
"We saw first hand how distressing it was for the family so I'm hoping the money raised through this goes some way to providing comfort in these difficult times," Mr Hansen wrote on the gofundme page.
Australian Associated Press
