Grandma Mary Duggar cause of death: 911 call reveals ‘possible drowning’ [UPDATE]

Grandma Mary Duggar at Jill Duggar's wedding.
UPDATE: Grandma Mary Duggar’s cause of death has been confirmed as an accidental drowning. PEOPLE was able to verify that the Duggar matriarch slipped and fell into the pool according to Washington County Coroner Roger W. Morris. Grandma Mary Duggar’s death has taken everyone by shock. She was just 78 […]