Borce Ristevski, her husband of 27 years, initially denied any involvement and carried her casket at her funeral.
But the 55-year-old then confessed to her manslaughter in March last year, just as he was due to go on trial.
Borce was initially jailed for nine years, however his sentence was then increased to 13 years with a non-parole period of 10 years in December, after he refused to reveal why or how he killed his wife.
However, during her 60 Minutes interview, Sarah continues to show her support for her father.
“Surely you asked your dad, did you do this? You asked him that? Did you kill my mum?” 60 Minutes’ Liz Hayes asks Sarah in the interview.
“Even after he was charged, do you ask him: Dad did you do this?” she adds. “I think people need to know.”
Sarah responds: “I asked him if he had anything to do with it.”