The little girl was practicing how to hide in a toilet cubicle should a gunman enter her preschool and start shooting.
Stacey took to Facebook to plead with people to consider stricter gun laws.
‘I took this picture because initially I thought it was funny,’ wrote Stacey. 'However the moment she told me what she was doing I broke down. She was practicing for a lockdown drill at her preschool and what you should do if you are stuck in a bathroom. At that moment all innocence of what I thought my three-year-old possessed was gone.’