A Melbourne mother told a family doctor she would not harm anyone about a week before she killed one of her twin baby girls and seriously injured the other.
Dr Sam Zagarella asked the mother whether she felt at risk of harming those around her when he conducted a mental health assessment in April 2012.
"There was no risk of harm," Dr Zagarella told the Coroners Court of Victoria on Friday.
Dr Zagarella helped to develop a mental health treatment plan and referred the mother to a psychologist, also arranging a series of blood tests to see if there was any underlying issue.
"She looked tired, she looked stressed," he said.
"But there was no evidence of postnatal depression from what I could gather on that occasion."
One of the babies died in hospital on April 26 after her father discovered she was unresponsive and was having trouble breathing.
An autopsy found traumatic injuries to the girl's brain, body and ribs that were not all inflicted at the same time and were not accidental.
The twins' mother pleaded guilty last year to infanticide - an offence that applies when a mother kills her infant while the balance of her mind is disturbed.
She also pleaded guilty to a count of recklessly causing serious injury to the other twin, and was sentenced to a 12-month community corrections order.
A mental health nurse, Sally Goodchild, saw the mother on the same day as Dr Zagarella.
She told the court the mother appeared relaxed and "interacted brightly" with staff.
"(The mother) did not present in any way depressed," Ms Goodchild said.
An inquest, held to examine the role of health care providers, finished on Friday.
State Coroner Ian Gray is expected to return findings next year.
Maurice Blackburn senior associate Tom Ballantyne, who represented the baby girl's father and extended family, told AAP it was concerning that medical professionals who saw the twins with bruises did not take steps to protect them.
"There were numerous opportunities to intervene and prevent her death," Mr Ballantyne said, speaking outside court.
Mr Ballantyne hoped Mr Gray's recommendations would address sharing of information between medical professionals and live record keeping.
He said the inquest had been very tough on the baby's father, who wanted to prevent the same thing happening to another family.
