The daughter revealed she was practicing what she'd been taught to do if ever she got stuck in a bathroom during an attack.
Stacey Wehrman Feeley says this made her realise all her daughter's innocence was gone.
'Politicians - take a look. This is your child, your children, your grandchildren, your great grand children and future generations to come,' she wrote.
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The photo and Stacey's plea for gun control receive more than 27,000 likes and is rising.
So were the number of comments below the post supporting Stacey’s thoughts.