Ten-year-old Amerie Jo Garza — a first-year Girl Scout — was fatally shot at Robb Elementary School while calling 911 on the gunman On Friday, 10-year-old Amerie Jo Garza was posthumously awarded the Bronze Cross by the Girl Scouts of the United States of America, her grandmother, Berlinda Arreola, tells PEOPLE. The national award is reserved for Girl Scouts who …