Amy Locane-Bovenizer, 39, of Hopewell, is charged with aggravated manslaughter and assault by auto.
Authorities say Locane-Bovenizer's Chevrolet Tahoe hit a Mercury Milan driven by Fred Seeman of Montgomery as he was turning into his driveway on June 27. Seeman's wife, Helene, was killed.
Police say officers arrested Locane-Bovenizer after detecting alcohol on her breath.
She has been free on $50,000 bail. She faces up to 30 years behind bars.
Locane-Bovenizer allegedly confessed to police that she'd been drinking before the crash. Locane starred in "Melrose Place," as well as the movies "Cry Baby" and "School Ties."