The other driver involved in the crash, Craig Whitall, also passed away at the scene after reportedly driving home from a methadone clinic.
Earlier in the week, hundreds of mourners had attended the funeral service of Jessica's mother Vivian, 60, father Lars, 69 and sister Annabelle, 21, at Saint Mary's Church in Concord, Sydney.
Jessica, has been in a coma since boxing day after a freak vehicle accident took the lives of her parents Lars, 69, and Vivian, 60 and her younger sister, Annabelle, 21.
A bedside vigil had been made for Jessica in the Intensive Care Unit at St George Hospital, where she was in a medically induced coma.
She underwent surgery in the days following the crash but more than two weeks on is still clinging to life in a critical condition.
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Falkholt has been in a coma since the accident, and had her life support pulled on January 11, just one day after her mother and father were laid to rest. Everything we have done and every decision we have made has been done with the advice of doctors and social workers.
Paul Ponticello, brother to Vivian and uncle to Jessica, said he "always thought we would grow old together".
"Speaking about the accident, Jessica's uncle, Paul Ponticello, said: "[It's] a day that will be hard to erase from our memory", adding that Lars was known for being an excellent driver.
Broadcaster Network Seven said in a statement last month: "Although her time on set was brief, once a part of the Home and Away family, always part of the family". You will always be remembered and in our hearts forever. Australian media are describing the driver of the other vehicle as a "serial traffic offender" who was driving back from a methadone clinic when he collided with the Falkholts' auto.
The coronial investigation into the crash will focus on whether Mr Whitall was under the influence of drugs at the time of the crash.