Now, the family of the girl, Ifrah Siddique, is looking for answers as to how it could happen.
When the mirror fell, reports indicate the toddler's mother and another woman struggled to lift the heavy object off of the girl.
Police have since said the death, "appearing to be an accident". Latisha Culpatrick works at the MetroPCS store next door. She was rushed to the hospital where she was declared dead.
"She had internal bleeding and she lost a lot of blood", Aqib Iftkhar told the Journal-Constitution.
"I feel dead like I am no more. It just fell down", Siddique said. "That's bad - really bad". "I just saw blood, and I though she just had a seizure or something, but I didn't know it was that bad".
The Siddique family has asked that the store ensure shelves and mirrors are secure and in place to prevent another tragedy.
He told WSB-TV's Lauren Pozen that Siddique was with her mother when an unsecured mirror somehow fell on her.
Discount footwear company Payless ShoeSource said in a statement on Sunday that it is devastated and that the company is working with authorities to understand the "nature of this accident".
The company released a statement saying, "Our deepest sympathies go out to the family of Ifrah Siddique during this time of incredible loss".
The 20-year-old cousin of the toddler also said there wasn't much communication between the family and the store following the freak accident.
Payless corporate told Pozen they are cooperating with authorities in the investigation.