DALLAS (AP) — Shawn Chelf remembers his mother's wake. She had been brutally murdered — attacked and strangled — but her 7-year-old son thought she was simply asleep. He grabbed her hands. They were cold to the touch. "I was just a kid. I was like 'Mom, wake up' and ... she was not going to wake up," Chelf, now 35, said while fighting back tears.