However, in an act of remarkable strength, Anthony and Marite managed to pull through with the love and support of their friends, family and community.
'The whole of Australia cared for us and we're really grateful for their kindness,' Ms Norris said.
Part of what we're trying to do is to let them know how we are and let them know how far we've come.'
As well as creating a dedicated art space and sustainable farming practice, the couple credit the birth of their youngest daughter, Violet in 2016 with helping them overcome their grief.
'Violet's birth is a testament to our belief that love is stronger than hate,' the couple said in a statement in 2016.
'We still live with pain but Violet, and the knowledge that all four kids are with us, always brings light to our darkness.
'As Martin Luther King said, 'Darkness cannot drive out darkness; only light can do that. Hate cannot drive out hate; only love can do that.'