Fifty-seven-year-old Kate Grossmith was attacked with a hammer on Sept. 13 and died in a Kelowna hospital on Sept. 22.
RCMP say they will recommend an upgraded charge against Grossmith's 24-year-old son.
Conor Grossmith has been in custody since the attack and was due to return to court on Oct. 1 to face the original charges of attempted murder and aggravated assault.
Grossmith's lawyer says his client suffers from mental health issues.
The family is well known in the Okanagan because the victim's husband, Harry Grossmith, raised more than four million dollars for regional projects with the local United Way before stepping down in May. (CKQQ, CHBC)