Rachel Shahinian, 50, her daughter Annika Zinsley, 20, and Shelia Weeks, 59, killed in head-on collision on State Route 120 outside of Chinese Camp, California

An Alameda woman and her 10-year-old daughter have been identified as among the three victims of a fatal traffic accident Saturday afternoon in Tuolumne County. Rachel Shahinian, 50, and her daughter, Annika Zinsley, a student at Otis Elementary School, were traveling east on State Route 120 about 4:05 p.m. when their 2007 Toyota Rav 4 was struck head-on by a 1997 Honda CRV traveling westbound.Modesto resident Shelia Weeks, 59, the driver of the Honda, also died in the collision near Tulloch Dam Road.While the Honda came to a rest in the middle of the road after the collision, Shahinian's Toyota ended up on the right shoulder engulfed in flames, causing a brush fire that burned about 120 acres, according to the California Highway Patrol.It was not immediately known whether drugs or alcohol was a factor in the collision.A graduate of Pepperdine University, Shahinian was a senior scientist at Roche Molecular Systems, a Pleasanton-based company that develops and supplies medical diagnostic products and technologies.Shahinian performed in the past two productions of "The Nutcracker" by the Alameda Civic Ballet as Mother Ginger and as a Party Lady, according to Abra Rudisill, its artistic director.Shahinian's daughter, Annika, also performed in the same productions as a Gingersnap and as a Russian.