Home and Away actress Jessica Falkholt has her life support switched off just one day after the funeral of her parents and sister following horror Boxing Day crash (Details, pics)

Jessica Falkholt has had her life support switched off by her devastated family weeks after the Boxing Day crash that claimed the lives of her parents and sister.

The 28-year-old Home and Away actress' family made the decision on Thursday evening, just one day after the funeral of father Lars, mother Vivian and sibling Annabelle. Parents Lars, 69, and Vivian, 60, died at the crash scene on the Princes Highway near Sussex Inlet, south of Sydney.

Annabelle, 21, was flown to Liverpool Hospital in a critical condition, where she died as a result of her injuries on December 29.Jessica's extended family had kept a bedside vigil in the Intensive Care Unit at St George Hospital where she was in a medically induced coma.

They previously told Daily Mail that an operation on her brain 'went well' and they were waiting for the results of the surgery.

Lars, Vivian and Annabelle were remembered by hundreds of family and friends at St Mary's Catholic Church at Concord in Sydney's west on Wednesday.

Jordan Brohier, the shattered boyfriend of Annabelle, led pall bearers as they carried the 21-year-old's white coffin out of the church.

Dressed in a black suit and tie, he buried his face in his hands and was comforted by friends after helping load the casket into a hearse ready to be taken away for burial. Jessica and Anabelle's uncle Paul Ponticello told a packed funeral service at the church in Sydney's inner-west that Christmas would forever haunt their family.

'It is a day that will be difficult to erase from our memory,' he said. 'Their lives on this earth ending on a highway makes absolutely no sense.'

Mr Ponticello also thanked the 'saviours' who risked their lives to pull Annabelle and Jessica from the inferno. He said Mr Falkholt had always been a careful driver and he would often joke about having to add on time to any trip, which he called the 'Lars factor'.

'Whenever asking how long it would take to drive somewhere I would suggest an average for a normal driver and then add some additional time for the Lars factor. We always had a good laugh.'

'The irony of this tragedy is Lars was such a careful driver,' Mr Ponticello said.

'They are together and always will be... You will always be remembered and in our hearts forever. Rest in Peace.'