Jessica Falkholt is still alive and in critical condition in Sydney's St George Hosptial, five days after her life support was turned off.
The 29-year-old actress was involved in a Boxing Day car crash that killed her parents, Lars, 60 and Vivienne, 60, as well as sister Annabelle, 21.
The driver of the other vehicle, 50-year-old Craig Whitall, also died in the crash on the Princes Highway at Mondayong, on the NSW south coast.
Mr Whitall was well-known to police in his hometown of Ulladulla, had more than 60 offences on his record and had been jailed for driving while disqualified, authorities said.
Social media has been flooded with well-wishes for Jessica, who is still fighting for her life.