MIAMI GARDENS -- For 33 years, in a bedroom decorated with angels, Kaye O'Bara has tended to her daughter, Edwarda, a diabetic whose heart stopped beating in 1970, damaging her brain and thrusting her into a sleep from which she has never awakened. Kaye turns Edwarda from side to side a dozen times a day to prevent bedsores. She mixes baby food, milk, eggs, orange juice, Mazola oil, brewer's yeast and a piece of white bread into a blender and then a wire mesh strainer, pouring the concoction into Edwarda's feeding tube every two hours, day and night. She suctions...