LITTLE ROCK (KATV) — Rebecca O'Donnell, who was arrested last year on suspicion of killing former Arkansas State Senator Linda Collins, has pleaded guilty to first-degree murder and abuse of a corpse on Thursday. O'Donnell accepted a plea deal in the stabbing death of Collins in Randolph County court on Thursday. "I went to Linda's house and I intentionally killed her and then hid the body," O'Donnell told the judge. Collins was found dead at her home in Pocahontas on June 4. O'Donnell, who worked for Collins, was arrested 10 days later. She was sentenced to 40 years for first-degree...