A man who lost his wife and young son in NSW when Athena Vibert drove into their car after likely suffering an epileptic fit is disappointed she'll potentially spend only 18 months behind bars.
Darren Bullock's wife Julie, 49, and seven-year-old son Hudson died in the horror smash on the Hume Highway southwest of Sydney in March 2017.
The accident left his daughter Sienna - Hudson's twin sister - fighting for life.
Vibert, 52, at times struggled to breathe through her tears as NSW District Court Judge Antony Townsden on Friday read out the details of the accident that robbed the Bullock family of their loved ones.
The court heard Vibert left her lane of the highway, crossed over a median strip and smashed into the Bullock's car.
The judge accepted she was suffering from a "complex partial seizure" at the time.
Vibert previously pleaded guilty to two counts of dangerous driving occasioning death and one count of dangerous driving occasioning grievous bodily harm.
She was sentenced on Friday to three-and-half years in jail with a non-parole period of 18 months.
"I'm actually a bit disappointed in the sentence," Mr Bullock said outside court.
"Eighteen months for killing two people and hurting Sienna the way she was hurt seems a bit light on. It was an avoidable accident."
Vibert had, on four occasions, lied about her epilepsy while applying to renew her license, ticking "no" next to a question asking if she suffered from the condition.
She had her first epileptic seizure when she was five years old.
Vibert had not taken her anti-convulsant medication on the day of the accident because she was due to have a blood test.
Judge Townsden noted Vibert had not been warned of the risks associated with driving and at least one doctor said it would have been "reasonable" for her to hold a license even if she had been honest about her epilepsy.
However, the judge said "it was certainly completely wrong of Ms Vibert to deny she had epilepsy".
The court heard fragments of a letter Vibert had written to the Bullock family.
"I wish I had died instead of them," she wrote.
"Not a second of my life goes by when I don't think of you and your family ... I died that day."
Mr Bullock said that while he'd let go of his anger, he didn't accept Vibert's apology.
"It didn't really show much remorse at all ... it was scripted," he said.
"She's still breathing. Julie and Hudson aren't. Physically (Sienna) is OK but she misses her mum and her brother greatly.
"To me, it's a bit like she was literally drink driving."
As a weeping Vibert was led away after being sentenced, she turned to her family in court, blew them a kiss and said: "I love you. Look after each other."