"It's stupid. It's ignorant. We have a lot of stupid people on the streets," said Police Commissioner Charles H. Ramsey, who visited the crime scene in the 7300 block of Theodore Street.
The west end of the block was filled with crime-scene markers. Investigators found 30 pieces of ballistic evidence. Twenty-three shell casings - some gold-colored and some silver-colored - were recovered.
Around 4:10, the woman arrived in the block and parked, waiting for the man to come out of his mother's house, said Lt. John Walker of Southwest Detectives.
She was there to drive him to a halfway house in North Philadelphia where he lives, Walker said.
As the man got into the passenger seat, the gunmen approached from nearby Island Avenue, which was packed with late-afternoon traffic.
As they opened fire, the woman shifted the car into reverse and backed up until she struck a retaining wall in front of a house, Walker said.
At some point, police said, the man jumped out of the car and ran. He was not wounded.
The woman was shot in the left side of her chest.
She was rushed in a police car to the Hospital of the University of Pennsylvania, where she was pronounced dead at 4:32. Police withheld her name pending family notification.
Her daughter was transported to Children's Hospital of Philadelphia and was listed in stable condition.
It was unclear who was taking care of the woman's two other children in Delaware.
The Honda's driver's-side window was blown out. There were at least four bullet holes in the car, Walker said.
Most of the casings were near the Taste of Asia restaurant at Theodore and Island.
Police checked a video surveillance system at the restaurant but found that it was not recording at the time, Walker said.
Contact Robert Moran at 215-854-5983, or firstname.lastname@example.org, or follow @RobertMoran215 on Twitter.