TULSA — A Tulsa County jury imposed a 2½-year prison sentence Friday night after convicting a woman of second-degree manslaughter in the diabetes-related death of her ailing son, whose treatment she believed relied upon spiritual means.

Prosecutors alleged that Susan Grady acted with “culpable negligence” toward 9-year-old Aaron Grady between June 2 and June 5, 2009, by not seeking medical treatment for him.

Aaron died June 5, 2009, at his family’s Broken Arrow apartment from complications of diabetes mellitus.

District Judge William Kellough set formal sentencing for June 8.