A Southern California mother is heartbroken after her two adult children were killed in a crash on the 60 Freeway in Chino.
The crash happened on April 7 around 2 a.m. when siblings Joseph Perez, 21, and Jacquelyn Perez, 23, were driving home after visiting their mother in Riverside.
Inside the car was also Joseph’s pregnant girlfriend and their 8-month-old daughter, Nicole…