Sherry Myers said she visited WellSpan ReadyCare in Gettysburg, Pa., where a man secretly took photos of Jayden, her daughter, and posted them on Facebook.
The photos taken by the man resulted in people questioning Jayden's gender.
"I am really upset about it," Myers said. "It's horrible."
Myers soon learned that the photos were taken by a Pennsylvania firefighter with Lake Meade Fire and Rescue. The man has since apologized, but Myers said his apology is not enough.
A caption accompanying one of his photographs pokes fun at Jayden's shoes; one with another photo asks others to guess if Jayden is a boy or a girl.
"It's disgusting," Myers said. "He is supposed to be protecting my daughter, not putting her on a social network for her to be bullied."
Outraged by the photos, more than 1,100 social media users had flocked to a Facebook page called "Justice for Jayden" by Thursday evening.
"The sole purpose of this page is to let the public know our story of cyber bullying! How we handled it and that if they are faced with this situation that they are not alone," Myers wrote. "I want this to be an informative page to help victims like my daughter."
When contacted by