It happened in the 8800 block of Baseline Road around 1:45 Sunday afternoon, according to the police report.
Police say the 84-year-old was taken to the hospital for treatment of cuts to her left side, hands and feet and swelling to the left side of her forehead. Her condition isn't known.
The woman told police her credit cards, social security card, driver's license, and checkbook were inside the purse.
The suspects were described only as a black man and a black woman who drove away in a maroon Nissan Frontier pickup truck.