Senior State Prosecutor Susan Galloway told the court that Marli had indicated she did not want to be a witness for the defence.
She still has retrograde amnesia and therefore has no recollection of the events of that night, Galloway confirmed.
Earlier, the State’s final witness, bloodstain analyst Captain Marius Joubert, told the court that there were no signs of a second axe being used on Marli on the night her brother and parents were murdered in their family home in Stellenbosch in 2015.
He testified that a fleeing intruder would have left a trail of drip marks from the bloodied object, but there were no signs of blood to support that theory.
Marli was hit eight times with an axe. The State believes it was the same axe used to murder her parents and brother.
But Henri, 22, claims an intruder, possibly more than one, was behind the attacks.
None of Marli’s blood was found on the axe used to kill Teresa, Martin and Rudi van Breda, which Joubert said was “inexplicable”.
He said Marli was facing her attacker but that he could not exclude the possibility that her attacker came from outside the room Henri shared with Rudi.
This would fit in with Henri’s version that he was not near his sister when she was attacked.
The case was adjourned to Thursday.