LAWRENCEVILLE, Ga. (AP) — A Gwinnett County jury has returned a guilty verdict against a woman accused of killing her daughter-in-law. The Atlanta Journal-Constitution reports that jurors on Wednesday found Joanna Hayes guilty of malice murder, felony murder, aggravated assault and possession of a firearm in the commission of a felony. Hayes was given a life prison sentence in the slaying of Heather Strube in a Snellville Target parking lot in 2009.