It has been alleged that Michaela knew her alleged attacker, Mert Ney.
The marketing and public relations graduate was found with fatal stab wounds to the neck and throat a short distance from where Ney allegedly terrorised CBD pedestrians in chilling scenes that were filmed by onlookers, and viewed around the world.
Ney is also accused of stabbing a 41-year-old woman who was believed to be a random pedestrian. She is in a stable condition.
Michaela’s mother described her girl as a 'beautiful, loving woman who had studied at university and travelled widely'. She also described her as 'very much loved'.
Meanwhile, disturbing footage has emerged of the alleged Sydney knife attacker looking visibly distressed and incoherent in a hospital emergency room a week prior to the rampage through Sydney's CBD.
The scene, filmed by a concerned member of the public and screened by 7 News, will raise questions about the effectiveness of the mental health system in identifying and effectively dealing with the man's apparent problems ahead of his alleged actions in the city a week later.
The footage captures Ney in an alleyway taking a selfie before putting a balaclava on.