A Kansas couple facing forgery and second-degree murder charges in connection with a Camden County man’s 2010 death may testify against the victim’s daughter.

A prosecutor told a Boone County judge this week that Stacey and Desre Dory are cooperating as the state builds a case against Susan Elizabeth Van Note.

Van Note, a Kansas City lawyer, is charged with killing her millionaire father.

Prosecutors say she forged health care documents that led to University Hospital doctors removing him from life support.

William Van Note and his long-time girlfriend were attacked at their Lake of the Ozarks home in October 2010. Van Note’s daughter has pleaded not guilty and is free on bond.

Desre and Stacey Dory, of Shawnee, Kan., have pleaded not guilty.