A man involved in the death of a Queensland mother shot in her home has been told how he has tragically changed the lives of her two sons forever.
Geoffrey Dale Granz Glenn, 35, was among a group who were confronted by a nunchucks-wielding man during an attempted robbery on a rural property south of Brisbane before Megan Kirley was killed.
Ms Kirley, 40, died from a single gun shot wound at the Karawatha property in February 2019.
Before sentencing, Justice Frances Williams referenced the Kirley family's victim impact statement to give an insight into the "great loss that has been suffered by them as a result of your actions".
"The ... statement no doubt only partially reflects the true impact on the family and in particular the deceased's two sons," she said in the Supreme Court.
"The life of those two boys has forever been changed by the events of that night.
"Whilst over three years has passed since the deceased's unlawful death the grief and loss experienced by the Kirley family remains ongoing."
Justice Williams also acknowledged Granz Glenn's written apology to the family for causing "unimaginable pain" but believed it may be no consolation.
"You state you will always live with regret, that you should have or could have possibly changed things that night and given the chance you would have," she said.
"You further ... acknowledge no time you spend in jail will ever compensate for their loss and grieving that will forever weigh heavily in their hearts.
"Whilst your comments may be of little consolation to the Kirley family you now have a level of appreciation ... of the impact caused by your actions."
Granz Glenn was among a group aiming to rob the rural property of drugs or money in the early hours of February 9, 2019.
Ms Kirley was in bed at her container home with her partner Pieter Pickering when the group arrived in two cars.
Granz Glenn drove one of the vehicles and got out with another four members of the group at the container house.
Accomplice Cameron Lindsay Witoko was carrying a meat cleaver, and another - Stafford Anthony Emmerson - had a firearm.
When they tried to open the container home's door, Mr Pickering jumped out swinging wooden nunchucks and a startled Emmerson fired the gun.
The group fled and Granz Glenn drove away with co-offenders as Mr Pickering gave chase.
Ms Kirley died from wounds to her head and neck from a single, splintered bullet.
Granz Glenn had initially been set to stand trial for murder but pleaded guilty to manslaughter in May.
He was on Wednesday sentenced to nine years in jail and will be eligible for parole after serving four-and-a-half years.
The 1262 days he has spent in custody - three years and five months - was considered time served.
Four others have been jailed following Ms Kirley's death.
Witoko, Emma Louise Hinds - a grandmother of a four-year-old - and Kobi Daniel Oram each received nine years in prison after pleading guilty to manslaughter.
Emmerson was found guilty of manslaughter by a jury in June and was also sentenced to nine years in jail.
