how did they die?>

who? Cecilia first slit her wrists in the bathtub, but that attempt failed and she eventually jumped out of the window into a metal gate in the garden. Therese took sleeping pills, Bonnie hanged herself in the basement, Mary stuck her head in the gas oven, and Lux died of carbon monoxide poisoning by leaving the car engine running in the garage. Although in the book one of the sisters survives and takes her life shortly after (don't remember I think it was Mary)