Brenda Moreside (Canadian Press)

A woman slain in the northern Alberta town of High Prairie telephoned 911 for help, but the RCMP did not respond to the emergency call, CBC News has learned.

Brenda Moreside, 44, was stabbed to death in February in her home in the city, nearly 300 kilometres northwest of Edmonton.

Her common-law husband, Stanley Willier, has pleaded not guilty to second-degree murder.

The 911 call came shortly before 6 a.m. on Feb. 13, 2005.

According to a classified briefing to the Commissioner of the RCMP obtained by CBC News, Moreside was calling for help.

She told the operator that Willier was drunk and breaking through the window of their home.

The briefing note indicates that Moreside said she didn't want to deal with Willier.

She asked again for help, but the police never turned up.

Now Moreside's children are wondering whether their mother's death could have been prevented.

RCMP spokesperson Corporal Wayne Oakes said the force is doing a complete internal investigation.