OROVILLE, Calif. - The woman who was shot and killed last week aboard a Greyhound bus in Oroville, Calif., died protecting her children, according to her family. Karin Dalton, the 43-year-old mother of four, was gunned down allegedly by Asaahdi Coleman, who started shooting at passengers as they exited the Los Angeles-bound bus after it stopped at a convenience store authorities said.