According to The Daily Telegraph, Jessica, 29, had her life support switched off on Thursday evening, a day after the funeral for her sister Annabelle, 21, and parents Lars, 69, and Vivian, 60.
Jess's parents were killed on Boxing Day on the NSW coast after a family Christmas at Ulladulla, when their car collided with serial traffic offender, Craig Whitall, 50, who was also killed.
Vivian’s younger brother Paul Ponticello spoke at the service where he thanked the people who ran to the aid of the sisters.
“(It’s) a day that will be difficult to erase from our memory.”
Ponticello also spoke about the love between his sister and brother in law, “They are together and always will be ... You will always be remembered and in our hearts forever. Rest in Peace.”