THE injuries Gail Parnell died from were entirely survivable.
The slash to her chest was minor and the stab wound to her abdomen could have been surgically repaired with medical intervention.
But tragically, the person who inflicted those wounds, Gail’s mentally ill daughter, Keren Parnell, refused to let her father, John Parnell, call an ambulance until it was too late.
Judge Roy Ellis on Friday jailed Keren Parnell for a maximum of eight years and three months, with a non-parole period of four years and three months after she pleaded guilty in February to manslaughter by reason of substantial impairment due to an abnormality of the mind.
Keren had become angry her parents were pandering to her brother and jealous they loved him more than her when she stabbed her 73-year-old mother, who was an advocate and volunteer for mental health services in the Hunter, at a home in The Sanctuary on Kalaroo Road, Redhead on October 10, 2015.
Public Defender Peter Krisenthal said Keren Parnell’s mental state at the time of the killing was “critically important” and “significantly reduced” her moral culpability.
Keren Parnell had a “strained and complicated” relationship with her parents, the court heard, with all of her previous brushes with the law and mental health admissions relating to assaults on either her mother or father.
"In spite of what has happened I want the court to know that I believe Keren was truly unwell and that she didn't have the ability to change because of her mental disorder,” John Parnell told the court in a victim impact statement.
"She needed help and guidance beyond what Gail and I could do for her.
"Even if Keren doesn't recover I will continue to care about her.
"She is my daughter and she will be included in my will.
"Gail was a beautiful person, she is missed terribly."
Keren Parnell will be eligible for parole in 2020.
In spite of what has happened I want the court to know that I believe Keren was truly unwell and that she didn't have the ability to change because of her mental disorder.