In the NSW Supreme Court on Friday, the 25-year-old also pleaded not guilty to wounding her mother with intent to murder her.
Her trial, set down for July 28, is expected to last less than a week and Justice Graham Barr was told the main issue will be the woman’s mental health.
Ad: Vacation? City Trip? Weekend Break? Book Skip-the-line tickets
She is accused of fatally stabbing her 53-year-old father and 15-year-old sister at the family’s home in Revesby, in Sydney’s south-west, in July last year.
The woman also allegedly critically wounded her 52-year-old mother during the attack.
Book skip-the-line tickets to the worlds major religious sites — or to any other place in the world.
We appreciate your support
One way in which you can support us — at no additional cost to you — is by shopping at Amazon.com.
Our website includes affiliate links, which means we get a small commission — at no additional cost to you — for each qualifying purpose. For instance, as an Amazon Associate Religion News Blog earns from qualifying purchases. That is one reason why we can provide this service free of charge.