body in a suitcase 1200km away from her mother's remains in Wynarka, South Australia.

Daniel Holdom allegedly told two people he killed the young mother and daughter.

Crown Prosecutor Victoria Engel told Central Local Court after Holdom "stomped" on Ms Pearson-Stevenson, he took photos of her body as a "trophy".

It is alleged in the years after the young mum's death, Holdom withdrew $71,000 worth of Ms Pearce-Stevenson's Centrelink payments from her bank account.

Magistrate Les Mabbutt said on the Crown case Holdom killed the pair for a "financial motive, to kill Karlie and get access to her child".

Ms Pearson-Stevenson's remains were found on a fire trail in the Belanglo State Forest in NSW in 2010, but it was not until her daughter's body was found by the side of the roadin South Australia in 2015 that she was identified.

The bodies of Karlie Jade Pearce-Stevenson and her daughter Khandalyce were found 1200km apart.

At first the deaths were treated as unrelated until DNA testing proved they were mother and daughter.

The Crown case is Ms Pearce-Stevenson had left her home of Alice Springs with Khandalyce in 2008 and soon formed a romantic relationship with Holdom, whom she had known for several years.

The mother and daughter were in Holdom's company when they were last seen alive at a house in Charnwood in Canberra's northern suburbs.

Two housemates gave statements to police that Holdom and Ms Pearce-Stevenson had an argument on December 14, 2008 and left in her car, leaving Khandalyce behind.

Holdom returned alone the next day in Ms Pearce-Stevenson's car, which he traded