Article here. Jump the paywall by Googling the first couple paragraphs. Excerpt:

'A YOUNG mum has been released on bail hours after she admitted killing her young 14-month-old daughter.

When little Sanaya Sahib went missing Sofina Nikat told police she had been out walking with her daughter when the toddler was abducted by a barefoot African man smelling of alcohol.

In reality, Nikat, 24, suffocated the little girl then dumped her body in a Heidelberg creek during a walk to the park on April 9 last year.
...
She told police she killed her baby because she thought the child was possessed.

Nikat was charged with murder but today, her 24th birthday, pleaded guilty to a charge of infanticide.

She was the fifth Victorian woman to plead guilty to the charge that applied when a woman kills her child while mentally disturbed as a result of the birth.

While the offence carries a maximum penalty of five years’ jail, just one woman has been jailed for infanticide in Victorian history.'