The world’s longest coma patient, a Miami woman who had been called the ‘Sleeping Snow White’ during the 42 years she remained comatose, has died at the age of 59. Edwarda O’Bara was a cheery high school student in 1970 when she suddenly fell ill, threw up her medicine and slipped into a diabetic coma. But before she became comatose she turned to her mother and pleaded with her to ‘promise … you won’t leave me.’ Her mother stayed true to her word, enduring a grueling schedule to constantly stay near her daughter until the mother died five years ago and the woman’s sister became her primary care giver – until Edwarda passed away on Wednesday.