Heartbreaking: 14-Year-Old Stabbed Younger Sister for Being Ungrateful

A teenager in Illinois fatally stabbed her younger sister 40 times because she thought the 11-year-old was "being ungrateful". She initially blamed the attack on an intruder, but later revealed that she was responsible for it, citing her younger sister's lack of respect as the reason for her actions. » 1/25/14 6:00pm 1/25/14 6:00pm