"We are broken." The sixth victim killed in the Bourke St attack is named by her family.

Bhavita Patel’s family are heartbroken after she became the sixth person to die from the Bourke Street tragedy.

The 33-year-old died after her family made the excruciating decision to turn off her life support on Monday night, the Herald Sun reports.

Patel was injured when 26-year-old Dimitrious ‘Jimmy’ Gargasoulas allegedly drove his car through pedestrians at Melbourne’s crowded Bourke Street Mall on January 20.

She was walking near her Bourke Street office, where she worked as a finance consultant, returning from her lunch break when she was hit by the car.

Bhavita’s brother Mitesh said his family are "broken" after her death.

"I have no idea what to say about what happened except that I miss her and love her so much and can’t believe that I won’t see her any more," he told the Herald Sun.

"My parents and I are broken. But we all appreciate the love we’re getting from people."

Mitesh said his older sister was "cherished by so many people".

He said she was "incredibly successful" in her career. He spoke regularly with his sister, including on the day of the city rampage.

Further charges are expected to be laid against Gargasoulas, who has already been charged with five counts of murder, after Ms Patel's death.

Three-month-old Zachary Bryant, 10-year-old Thalia Hakin, 22-year-old Jess Mudie, 33-year-old Matthew Si and a 25-year-old Japanese national were also killed in the tragedy.

Seven people still remain in hospital, with one in a "grave condition", according to Victorian Premier Daniel Andrews.

Just yesterday, the mother of the youngest victim - baby Zachary - wrote a heartfelt message of thanks to the public for their support in the wake of the tragedy.

Nawwar Hassan Bryant wrote on Facebook that it wasn't "getting any easier” to adjust to life without her baby boy.

“I know in time, it will… but right now we are just missing our beautiful Zachary so much. Every move I make, every corner of the house and every sight we pass by reminds me of my child,” she wrote.

“Amidst all this sadness I feel so grateful to know there is so much love and kindness all around us.”

Bryant said she is choosing “love, kindness and compassion” in the wake of the tragedy.