Teen hero saves sister from mother's deadly attack.

A South Carolina woman has been accused of killing one of her daughters and attempting to kill another after their teenage sibling saved her from an attempted drowning. Jamie Bradley-Brun, 37, is being held without bond and faces charges of murder and attempted murder. The 16-year-old sister called 911 after waking up to her sister's screams and seeing her mother trying to drown her. The teen saved her younger sister and fled to a relative's home. The 6-year-old sister was pronounced dead at a local hospital. Bradley-Brun has no prior arrests and has been interviewed by authorities.