New mum Nethra Krishnamurthy is still critical after the Bourke St Mall tragedy.

Three days on from the Bourke Street rampage that saw a driver allegedly mow down 42 people on Friday afternoon, the family of a Melbourne mother in intensive care has created a crowdfunding page to help with growing medical expenses.

Nethra Krishnamurthy had returned to work from maternity just five days prior to the accident, and at the time of being hit, she was returning to her office after breastfeeding her eight-month-old son at his nearby daycare centre.

After being struck by Gargasoulas, who was travelling at a speed of approximately 80 km/h, Krishnamurthy suffered a punctured lung, broken ribs, fractures to her spine in three places, damage to her kidney and liver and deep lacerations to her head.

"Nethra was rushed to hospital and underwent emergency surgery for several hours. She is presently in Intensive Care, in a critical but stable condition," her family wrote on their recently created mycause page.

"Given the severity of her injuries, Nethra will remain in hospital for quite some time, and following this will have a long road to recovery, both physically and psychologically."

Neither Krishnamurthy or her husband have any immediate family in Australia.

Since being set up, the page has received more than 370 donations and close to $25,000 in funding. The family are hoping to raise a total of $50,000.

Five people died in the tragedy, with a further 37 injured, 15 of whom remain in hospital and two in a critical condition. The accused driver, 26-year-old Dimitrious Gargasoulas, has been charged with five counts of murder.

On Monday, the Victorian Government created a community fund to assist the families of victims affected by the assault.

Donate to Nethra's mycause campaign here.