Kyna C. Garnett, 32, of Lawnside, was charged Wednesday with one count of fourth-degree abuse and neglect.
The incident happened around 11:30 p.m. Saturday in the 500 block of the White Horse Pike in Magnolia.
Police said Garnett stopped at Colombo Liquors and left the engine of her Chevrolet Traverse running while she went inside.
Stolen SUV crashes with young children inside
Garnett's 8-year-old son and 10-year-old daughter were in the back seat, police said, when she entered the store.
Police said Christopher R. Dumas, 38, of Paulsboro got into the SUV and sped away on the White Horse Pike.
Dumas later collided with another SUV at Merchant Street and Hampshire Avenue in Audubon.
The impact sent the stolen SUV up onto a curb. It rolled onto its roof.
Dumas, the two children and the other driver, a 48-year-old Mount Ephraim woman, were all taken to Cooper University Hospital with nonlife-threatening injuries.
Police said surveillance footage obtained during an investigation shows Garnett's SUV was stolen around 30 seconds after she exited the vehicle and entered the store. It also shows she was in the store for several minutes.
Garnett was processed Wednesday and released on her own recognizance.
Dumas is facing multiple charges including two counts of kidnapping, two counts of child endangerment and theft.
He is being held at the Camden County Jail with bail set at $617,500.