Marcia Posten was pronounced dead at Children's Hospital of Pittsburgh after being found unresponsive around noon at a
day care center run out of a private home, said Lt. Daniel Herrmann.
"Right now, we're discussing what we should do with the (7-year-old) girl," Herrmann said. "She is not going to be arrested." He said the girl will likely be evaluated by a psychiatrist.
Authorities haven't decided whether the girl will be returned to her parents or turned over the Allegheny County child welfare officials.
Police said a 20-year-old day care provider was with six children in the basement of Bray's Family Day Care when she went upstairs to change a diaper.
The woman told investigators minutes later she heard something and went back into the basement and noticed Posten was on a love seat and not in the child's seat where she had left the infant, police said. The woman said the infant appeared to have blood near her ears.
The woman told police she called 911 immediately.
Investigators later learned the 7-year-old girl had taken infant out of the child's seat, police said.
