rob hayes explains what happened.reporter: for decades, she wavered between well-known actress and troubled soul. today that balancing act came to an end. representative tenney witness news heche has been declared legally dead but is still on life support for organ donation reasons. the family, issuing a written statement, "we have lost a bright light, a loving mother and a loyal friend." heche slammed her car into a mar vista home last week. it was a fiery wreck that destroyed the house. the woman and her pets inside the home escaped serious injuries, but heche was rushed to the burn unit at the hospital, where she slipped into a coma. after the crash,, police test her blood and said she was likely under the influence of a controlled suspect. heche had lived a troubled life. she wrote a book titled "call me crazy," in which she discussed her struggles with mental health and abuse. she had long been an advocate of organ donation. which is why she is still on life support. her oldest son, homer, releasing a statement t