"There was always going to be a few tears but that's a good thing," St Johns Ambulance volunteer Sharon Carpenter says.
She's one of hundreds of people who visited Melbourne's Bourke Street mall to grieve, one day after a rogue driver killed four pedestrians and injured many more.
Ms Carpenter treated four people at the scene after seeing the carnage from her office building nearby.
She ran down and immediately started giving first aid to a critically injured woman.
"She was bleeding from the ears, eyes and mouth, but she was breathing and I found a pulse," she said.
"Bystanders really helped with towels, and getting a defibrillator.
"We kept working on her until the paramedics arrived."
The incident was at the forefront of her mind on Saturday.
"This morning I woke up and I didn't want to sit around the house," she said.
"I wanted to come today and put some flowers down."
Floral tributes were building at the corner of the mall and Elizabeth Street as the shock of Friday's tragedy set in.
Premier Daniel Andrews, Victoria Police chief commissioner Graham Ashton and Melbourne's Lord Mayor Robert Doyle all came and laid flowers at the memorial.
Many of the bouquets also contained messages to the deceased, with one saying: "You were a bystander, you were innocent, you could have been any one of us. You won't be forgotten."
Four stems of white roses for each life lost also lay among the tributes, while numerous teddy bears joined the bouquets, possibly to mark the death of a 10-year-old girl.
A young dad Jake Docker held the hands of his two four-year-old girls as they laid their flowers.
"I live just around the corner, I walk down here all the time," he said.
"It could've been me walking along the road with my little girls and been us hit by a crazy madman. That's why I guess it's scary."
David Flynn was among those who stopped to reflect, after being caught up in the drama.
He came to the city to collect his truck, which got stuck when police cordoned off the streets.
"It's horrific. You see people down and down and down and I'm thinking, 'is it a gas leak, have they been shot?'" he told AAP.
"I was shocked. It's like a Hollywood movie."
Along with the floral tribute, a condolence book will be made available at the Melbourne Town Hall.
Firefighters who were on the scene during the incident on the corner of Bourke and Elizabeth Street leave flowers. Source: AAP
Baby still critical
Police say 30 were injured and on Saturday morning grave fears were held for at least two critically wounded victims.
Of the seven at The Alfred hospital, three were critical, one was serious and three were stable.
Eleven victims were taken to The Royal Melbourne Hospital after the attack, and on Saturday three were critical, two serious, four stable and two had been discharged.
A critically ill three-month-old baby remains at the The Royal Children's Hospital, along with a two-year-old in a serious condition and another child, nine, who was stable.
