Ruth-Ann Willis, who murdered her ex-husband over a child custody dispute, will spend 13 years in prison before being allowed to apply for parole.

The Prince Edward Island-born woman shot Russell Bailey on the front steps of his home near Hamilton, Ont., in 2002.

In November 2004, a jury in Hamilton found Willis, 43, was guilty of second-degree murder.

The conviction meant Willis got an automatic life sentence, with the judge left to decide the eligibility for parole. He had a 15-year window, with the provision that Willis spend at least 10 years behind bars.

The judge on Thursday decided on 13 years.

Willis shot Bailey eight times with a gun she stole from her father's Milton, Ont., farm. She was in a bitter custody battle with her ex-husband over the care of their two daughters.

The convicted woman owned and operated a pet store in Charlottetown at the time of the murder.

Willis has two daughters with Bailey. They are now living with relatives in Ontario. Another of her children, a four-year-old, lives with her father in P.E.I.

Willis's lawyer, Jeffery Manashin, said his client would appeal both the conviction and the sentence.