NEW : The sheriff 's office says that Fowler died after suffering multiple gunshot wounds . Georgia girl , 7 , died of head trauma , stabbing . NEW : Amid stepping up security , students at her elementary school say they 're afraid . NEW : School principal : ` ` I do n't think I ever saw her without a smile on her face '' The girl 's brother ` ` is not a suspect at this time , '' a sheriff 's spokesman says .
NEW : The sheriff 's office says that Fowler died after suffering multiple gunshot wounds . NEW : Amid stepping up security , students at her elementary school say they 're afraid . NEW : School principal : ` ` I do n't think I ever saw her without a smile on her face '' The girl 's brother ` ` is not a suspect at this time , '' a sheriff 's spokesman says .