A woman who blackmailed the Melbourne parents of a dying baby girl has been jailed for at least two years.

Siti Kamal pretended she had Jay and Dee Windross' missing phone, filled with photos of their dying 11-month-old Amiyah, and demanded $1000 for its return in April last year.

Kamal never had possession of the phone and continued to threaten to erase the images after the parents informed the woman their baby had died.

Dee Windross with her beloved baby girl. (Twitter)

Jay and Dee Windross' 11-month-old daughter Amiyah died days after the phone, containing precious memories of their terminally ill baby, was lost. (Supplied)

Speaking to reporters outside court, Mrs Windross said Kamal "got what she deserved" for the heartless act.

"It's taken weeks and weeks to get through this," she said.

"She shouldn't have done what she did.

"I don't want anyone thinking about her. Amiyah was more important than her."

The Windrosses still hold out hope the black Samsung S8 mobile, which was not backed up when it was stolen, could be returned.

"If you still have my phone, give it back to me," Mrs Windross said.

"Just give it back. You can't get anything from it. You can't get money from it.

"All you've taken from me and Jay is every single memory I have of my daughter. Give it back. Stop being so pathetic."

Amiyah was born with an undiagnosed neurological condition. She spent 200 of her 338 days alive in hospital and Mrs Windross documented everything.

"Whoever still has (the phone) or took it still has it and they need to know what they took from us," the grieving mum said.

"I don't care what happens to you. You'll get your own comeuppance. I just want my photos back."

Siti Nurhidayah Kamal has been jailed. (Twitter)

The 25-year-old blackmailer has been jailed for three years. She must serve two before being eligible for release on parole.

County Court of Victoria Judge Elizabeth Gaynor today said Kamal's actions were reprehensible and repellent.

"That you should be inspired in the first place by such suffering to offend in this way, much less continue it as intensely as you did even after being told Amiyah was dying and then of her death, I find to be so reprehensible as to be amoral, the judge said.

"The immorality of your actions must have been clear to you from the outset.

"That you also falsely represented that you had the phone, which had the effect of adding to the Windross' devastation in the immediate aftermath of their daughter's death in my view only compounds the repellent nature of this offending."

Kamal earlier pleaded guilty to blackmail, a crime her lawyer said had been driven by financial distress.

But Judge Gaynor found there was little evidence to back that up.