A woman who shot and killed her Hamilton flatmate after drinking and taking drugs all day has been jailed for three years.

Tiffani Sutcliffe, 23, appeared in the High Court in Hamilton this morning for sentencing. She previously pleaded guilty to manslaughter.

In May, Sutcliffe shot 40-year-old Rhys Williamson in the chest with a sawn-off shotgun from pointblank range.

The weapon had been brought to the Seddon Rd home by another person and Williamson pointed it at Sutcliffe in jest as people at the flat engaged in group sex.

Sutcliffe took the shotgun off him and fired, not realising it was loaded.

Sutcliffe tried to hide the weapon and dragged Williamson's body to the front of the house before calling emergency services.

Tiffani Jade Sutcliffe was jailed for shooting Rhys Gordon Williamson in Hamilton. Photo / Alan Gibson

After telling police false information twice, she eventually confessed that the gun had been pointed at her head before she took it and that she didn't know it was loaded. She didn't think Williamson knew either.

Justice Christian Whata sentenced Sutcliffe to three years and one month imprisonment, saying her behaviour was reckless, but he saw hope for her.

"Your actions were spontaneous and you didn't seek help immediately, but you're now deeply aware of what you have done, meaning you're a prime candidate for rehabilitation," he said.

But Williamson's mother Kathleen Brown, labelled Sutcliffe's actions as stupid, irresponsible and callous.

"We looked forward to the day my son would turn his life around but his violent death has left us reeling because as a mother you don't expect to bury your child," she said.

Her husband, Mervyn Brown, Williamson's stepfather, questioned Sutcliffe's remorse, saying she displayed an arrogant attitude. Sutcliffe merely wanted "her 15-minute moment of fame and to be the centre of attention", he said.

"She was smiling, laughing and waving to her family showing little respect for the man she killed, nor does she accept responsibility for her actions," he said.

Brother Shay McAulay told the court he realised he was supposed to urge the offender to improve her life but he didn't care.

"To me, she is as dead as my brother. I don't care what happens to her."

The Herald previously reported Sutcliffe and her 20-year-old girlfriend had been drinking pre-mixed bourbons earlier in the day on May 31.

Williamson joined them when he got home from work and sometime between 6pm and 6.30pm, a friend of the group, Anthony Brett Clegg - who was recently out of prison - arrived at the house and also began drinking with them.