BRENTWOOD, N.H. – A New Hampshire woman who initially pleaded not guilty to being an accomplice to first-degree murder in the death of her husband’s ex-wife in 2013 has reached a plea deal.

Sarah Desjardins of Epping, 36, was charged in connection with the death of Amanda “Amy” Warf.

Desjardins is scheduled to appear in Rockingham Superior Court on Aug. 7 for a plea and sentencing hearing. The notice to plead doesn’t specify a charge; hers was filed in court Thursday.

Senior Assistant Attorney General Susan Morrell said Monday she cannot discuss details of the hearing. A message was left seeking comment from Desjardins’ lawyer.

Her husband, Aaron Desjardins, 38, was sentenced in March to life in prison without the possibility of parole after pleading guilty to first-degree murder and conspiracy charges. His sister, Michele Corson of Skowhegan, Maine, 44, pleaded guilty to conspiracy charges. She awaits sentencing.

Both were expected to testify against Sarah Desjardins at her trial, scheduled for this year. She was accused of helping to plan Warf’s death, providing advice to her husband on how to avoid detection, giving him a false alibi, and/or sending a text message to Corson to bring the gun, according to her indictment.

In pleading not guilty, Desjardins said she was under duress and told police about the plan.

Prosecutors said Aaron Desjardins ambushed Warf in her employer’s parking lot and forced her to drive to a concrete plant in Exeter, where he slit her throat, poured gasoline on her and set her ablaze. They said his plan to kill her dated back to 2011, when she left him.

According to Corson, Desjardins used a gun that Corson had brought back from her father’s house in Maine to scare Warf.

Police said before he killed her, Desjardins asked Warf why she had left him and if he was still the beneficiary on a life insurance policy. In police documents, Desjardins also said his ex-wife was trying to take away their son.