WA mum not guilty of husband's murder

A Perth woman has been acquitted of murdering her husband during an argument.

Thi Phuong Nguyen was accused of fatally stabbing Quang Tho To in May 2013.

During the trial in the West Australian Supreme Court, prosecutors claimed Ms Nguyen threatened to stab her husband before committing the crime.

Her lawyer argued there were other possible scenarios and said she had endured an unhealthy relationship for the sake of her four children.

The court heard the friction between the couple had become too much after a series of problems including gambling, drug use and troubles with their fruit and vegetable business.

A jury acquitted Ms Nguyen on Friday of murder and the lesser charge of manslaughter.