In the accident, Canberra local Kim Dorsett lost two children, 32-year-old Kate Goodchild and 35-year-old Luke Dorsett, as well as Luke's partner Roozi Araghi, 38.
Now, she has spoken out ahead of the one-year mark.
'One year ago, we were a family of seven enjoying the perfect weather of the Gold Coast,' she begins in an article published on The Courier Mail. 'Katie was the perfect mummy to her two beautiful girls [aged 13 and 1], and Luke and Roozi the perfect uncles.'
Kate's eldest daughter Ebony was also on the ride at the time of the accident but survived. Kate's husband David Turner was watching nearby holding the couple's baby, Evie.
'Our year has been filled with tears, laughter and disbelief,' she writes. 'At times, it has been difficult to face this tragedy and getting out of bed can be a major achievement... A mother should never see her children buried, no matter what the circumstance.
'It is a fact of my life that I visit my family at the cemetery, no longer able to drop in to annoy them.'
She thanked Queenslanders for their kindness and generosity, as well as the first responders who 'so lovingly cared for these three beautiful souls and showered the family with love and affection.'