The Des Moines Police Department said a brave and quick-thinking great-grandmother helped stop a man who stole a car with herself and her great-grandchild in the backseat.According to authorities, 59-year-old Bruce Martin Beehler stole the vehicle around Tuesday morning while the owner, Desirae Dupree, was inside a convenience store.“I went inside to get some donuts and I came out to no car and a phone