The woman was first captured on surveillance video inside a bar near the shooting scene on June 6.
According to police, the woman can then be seen outside talking to the victim near Wishart Street and Kensington Avenue at 2:43 a.m.
Video then shows her pulling out a gun and shooting the man in the abdomen.
SEPTA police officers were dispersing a large crowd nearby when they heard the shot.
The man was taken to an Temple University Hospital in stable condition.
The suspect is described as a woman in her 40s or 50s with several tattoos on her chest.
Anyone with information is asked to call police.