A Texas woman Thursday wiped away tears as she told a House panel how her mother was killed when a man on his cell phone ran a red light."You tell me if that cell phone call is really worth it,” Jennifer L. Smith said to the House Public Safety and Homeland Security Committee, which is conducting an interim study on the use of cell phones and texting while driving.Linda Doyle of Oklahoma City was killed in a Sept.Read more on NewsOK.com