The body of an unnamed baby girl was left wrapped in garbage bags under a tree for eight days, but the teen mother who left her there will not be jailed.
The newborn's mother, who was 18 at the time, has pleaded guilty to one count of infanticide.
A Victorian court heard she did not know she was pregnant and panicked when she felt the baby crown just a few hours after she played a basketball game with her sister and boyfriend.
She gave birth in one of the bedrooms of her father's house early on the morning of February 26 last year.
Prosecutor Andrew Grant told a pre-sentence hearing in the Victorian Supreme Court on Thursday the baby was alive when she was born.
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A post mortem examination could not determine the cause of death.
The teen, who cannot be named, told police she placed her hand over the baby's mouth so she wouldn't wake up family members.
She did not cover the baby's nose, and when she noticed the baby wasn't breathing, she cut the umbilical cord which was wrapped around the baby's leg.
The girl put the baby in a shopping bag after realising she was dead.
"I didn't know what to do when I saw the baby, like, stop moving so I just sat there and cried," the woman told police according to the summary.
She didn't call for assistance because she was scared and didn't know what to do, the court heard.
Two days later, she left the bag under a tree.
A psychiatrist and a neonatologist both said in reports tendered in court the woman experienced "pervasive denial of her pregnancy".
Psychiatrist Adam Deacon said she experienced acute stress and, likely, feelings of dissociation when she realised she was in labour.
The girl told her sister about the baby's death in March 2014 and they went to a police station to report it.
Justice John Rush on Thursday said he was not considering a term of imprisonment for the woman.
Defence barrister Helen Spowart said the woman was experiencing immense shame, remorse and regret.
"That self punishment is greater and more long lasting than any punishment that this court could impose," Ms Spowart said.
Infanticide is the crime of a mother killing her baby while the balance of her mind is disturbed following childbirth.
The maximum sentence for infanticide is five years in jail.
