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Kari Vallance, 30, of Leetsdale, Pa., is charged with child endangerment, aggravated assault, public drunkenness and other charges stemming from the incident in downtown Pittsburgh involving her 5-month-old daughter, which was captured on surveillance video about 6:30 p.m. Sunday.

(screen shot/KDKA)

Witnesses in downtown Pittsburgh were agape: A mother who appeared to be intoxicated and drooling was ramming a stroller with her 5-month-old daughter inside through a mass-transit station's revolving door so forcefully that her baby fell out and became wedged between the door and structure, according to TribLive.com.

In response, the woman, identified Kari Vallance, 30, of Leetsdale, had this to say to horrified onlookers:

"I'm not a bad mother," Vallance told witnesses, the website reported.

Well, Pennsylvania's criminal justice system might have something to say about that.

According to TribLive, Vallance is charged with child endangerment, aggravated assault, public drunkenness and other charges stemming from the incident, which was captured on surveillance video, about 6:30 p.m. Sunday.

Details from TribLive:

Several witnesses tried to stop the woman and pursued her out of the station as she headed down Liberty Avenue toward Sixth Street and attempted to cross the street. That's when the baby girl again fell out of the stroller and onto the street with cars traveling in both directions, The said.

A vehicle narrowly missed hitting the baby before police arrived and arrested the woman, according to Port Authority police Lt. Shawn Hudzinski.

The baby was treated at Children's Hospital of Pittsburgh for minor scrapes and was reported in good condition Monday morning.

Vallance "was exhibiting signs of being under the influence of either drugs or alcohol -- slurred speech, unsteady on her feet, her eyes were red and bloodshot, and she had saliva coming out of her mouth," Hudzinski said.

"She was apparently unaware of what was going on," Hudzinski said.

He praised witnesses who tried to stop the woman at the T station, contacted police and then pursued her.

"I applaud them for their efforts in trying to stop the woman several times," Hudzinski said. "But she just kept pushing and wanting to leave the scene."

Vallance is being held at the Allegheny County Jail. Her preliminary hearing on the charges is scheduled March 26.

Background: Vallance pleaded guilty last year to prostitution charges and was sentenced to one year of probation. In 2007, she pleaded guilty to retail theft and criminal conspiracy, and was sentenced to probation, records show.