A Perth woman involved in the murder of her abusive father has been told she must be jailed for life to demonstrate it is unacceptable for members of the community to engage in vigilante justice.

Christine Wong was found guilty of the murder of her 62-year-old father John Wong at the Mission to Seafarers in Bunbury in June 2008.

Her father had previously been convicted of sexually abusing her as a child.

Wong did not strike the blow that killed her father, but the court heard she did nothing to prevent the murder and stabbed him in the hand as he was dying.

Wong's accomplice, Dennis Tony Burns, previously admitted his involvement in the murder and has been jailed for life with a minimum of 11 years.

In sentencing Wong, Justice John McKechnie says it was clear her father's abuse had an irrevocable impact on her life, but that was no excuse for her to take matters into her own hands.

She was jailed for life with a minimum of 10 years.