THREE days before he murdered his toddler daughter, Ramazan "Ramzy" Acar told the world via Facebook how much he loved her.

"Yazmina + Ramzy 4 lyf," was his message.

On the day of her death Acar, 24, posted: "Bout 2 kill ma kid."

After kidnapping Yazmina, 2, a pitiless Acar gave her mum Rachelle D'Argent updates on his plan to murder their daughter as she desperately tried to persuade him to bring her home, Melbourne Magistrates' Court heard.

He used Facebook, SMS and phone calls to taunt her.

In one phone call he told Ms D' Argent: "I'm going to do it. Do you have any last words for her?"

Yazmina came on the phone and said to her mum "I love you" and a weeping Ms D'Argent replied "I love you too".

Acar then stabbed his only child with a 30cm knife, watching her bleed to death.

He told Ms D'Argent "I killed her to get back at you."

After his arrest Acar -- who pleaded guilty to murder yesterday -- was worried only about his own fate, crying and asking an officer at the scene "how long do you think I will get?"

Acar was banned from seeing his daughter because of his drug taking and violence, but tricked his way back into their lives.

On November 17 last year he arrived at Ms D'Argent's Hallam home and asked to be allowed to take Yazmina to a milk bar, just a few minutes away.

Acar had never been violent towards their daughter and Ms D'Argent reluctantly allowed him to take her.

"If you saw her face when she saw her dad. She had stars in her eyes when she ran up to him," she said in her police statement.

"That's why I let her go with him."

Acar then began sending Ms D'Argent text messages.

One read "It's ova I did it", another said "I h8t you" and a Facebook message read "Pay bk u slut".

As she left court yesterday an emotional Ms D'Argent said she had to be there for her daughter, who was described as an active intelligent child who loved Dora the Explorer and riding her pink bicycle.

"I wanted him to look me in the eye and he did," she said. "A quick glimpse but enough for him to say he was guilty."

Magistrate Peter Reardon remanded Acar in custody to appear in the Supreme Court on May 18.

Originally published as Status update: 'Bout 2 kill ma kid'