In the video, a day care worker can be seen shoving the child in the back at the top of the stairs.
"It still hurts me, just seeing the video", Tavares told CNN affiliate KYW.
The incident happened at Childcare of the Future, on the 700 block of Secane Avenue in Primos at around 5:15 p.m. on Friday, March 3.
There's no information regarding whether the camera's installation was the result of ongoing complaints about Sarah Gable.
Upper Darby police say 52-year-old Sarah Gable of Folcroft was sacked soon after the owners of Child Care of the Future saw what happened Friday.
Sarah Gable, 52, of Folcroft, Pennsylvania, was charged with simple assault, harassment, and endangering the welfare of ac hid, court records show.
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The video captures the daycare worker as she enters into the stairway behind the child. A day care worker appears behind the child. "We don't do this to children, '" Tavares told the station.
"Apparently for no reason she takes this child and just throws her down a set of steps", Upper Darby Police Superintendent Michael Chitwood said. She is now free on $25,000 secured bond. "I'm like, 'It's not her shoe. Her eyes were literally like 'help me'". "You don't put your hands on a child".
According to WCAU, the young girl suffered a minor knee injury as a result of the fall, but returned to the facility on Monday.
But, Tavares said, "she was a little scared of the steps".
Since her release, the source has attempted to contact Gable at her residence.