The victim was struck once in the neck around 8:20 p.m. and taken to Albert Einstein Hospital, authorities said in a release.
She was shot in on the 1400 block of West Loudon Street from a dark grey Chevrolet Malibu during an "altercation," investigators believe. The suspect is described as a black woman in her early-to-mid 30s wearing a white T-shirt, PPD said.
The suspect vehicle was last seen headed east on Loudon, they added.
To submit a tip, call the Shooting Investigations Group at 215-686-8270 or the PPD tipline at 215-686-8477.
Click here to follow Daily Voice Collegeville-Trappe and receive free news updates.