Nova Scotia's Crown is seeking an appeal from the Supreme Court of Canada in the case of a Digby woman accused of attempting to hire a man to kill her husband.

Nicole Ryan was arrested in March 2008 and was tried in Nova Scotia Supreme Court on a charge of counseling another person to commit murder.

She admitted she hired a man, who turned out to be an undercover police officer, to kill her husband, Michael Ryan.

She appeared in court in March 2010 and was found not guilty after presenting a defence of duress, saying she feared for her life

Justice David Farrar described her husband as a "nasty man" who had pointed a gun at his wife more than once.

The Crown appealed her acquittal, but on March 29, 2011, the Nova Scotia Appeal Court dismissed the appeal.

Now it is turning to the Supreme Court of Canada to appeal the decision.

The prosecution says its latest appeal will be based on errors in law relating to the defence of duress and resulting confusion between the defences of duress and self-defence.

"These are significant legal issues of public importance which the Crown wishes the Supreme Court of Canada to consider," said Martin Herschorn, director of public prosecutions, in a statement released Thursday.

The Public Prosecution Service will be filing its notice of application for appeal with the Supreme Court of Canada within the week.