A Kelowna, B.C. judge has sentenced a 67-year-old woman to life in prison with no chance of parole for 10 years for killing the mother of her great-grandson.

Grace Robotti was found guilty of second-degree murder in the death of Roxanne Louie, 26, earlier this month.

On Tuesday, Robotti and her brother, Peter, were also sentenced to 27 months in prison for indignity to a human body.

Peter had three months taken off his sentence for time served.

BREAKING: Grace Robotti has been sentenced to life in prison with no chance of parole for 10yrs for killing Roxanne Louie in Penticton. —@BradyStrachan

Louie, who lived in Vancouver, was killed in Penticton while visiting friends and family for the holidays in January 2015.

She died after being bludgeoned with a crowbar 26 times in a trailer. During the trial, Robotti admitted to delivering the blows that killed Louie, saying that an argument had turned violent.

Robotti's lawyer maintained their client had been acting in self defence.

Roxanne Louie, 26, disappeared on Jan. 4, 2015, while visiting family and friends in Pentiction, B.C. (Shayla Allison/Facebook)

During the trial, court heard that tensions between the two women — centred mostly around the care of Louie's three-year-old son — were high.

After the sentencing on Tuesday, Louie's uncle said he's disappointed Robotti could be granted parole after only serving 10 years of her life sentence.

"To me, I guess this is a lesson in 'murder 101': Cover your tracks, go with a lawyer to turn yourself in and get as light a sentence as possible," Dan Wilson said.

He said the loss of his niece has been a huge blow.

"We have a very close knit family. We get together for all the big holidays. The kids all play with one another. It's just devastating when you don't have those family members around the Christmas tree or around turkey dinner or at Easter."

Wilson said his family is now focusing on caring for Louie's now five-year-old son, who was in the trailer when his mother was killed.

In court, Robotti apologized for the pain she's caused and said she wished things had ended differently.

With files from CBC's Brady Strachan