was found dead inside the residence along with her husband Jack, 69, and their 11-year-old grandson Dalton, police tell PEOPLE. Terry and Jack are the parents of Johnson’s wife, Chandra.

Johnson's mother-in-law fatally shot her husband and 11-year-old grandson ... Terry Janway, 68, and Jack Janway, 69, were the parents of Johnson's wife, Chandra. Dalton Janway, 11, was the son ...