Dreaming or Dying: Rose's True Fate...

Hey guys! Rose DeWitt Bukater (later known as Rose Dawson Calvert) was an extremely important character in Titanic. She was believed to have died at the end of Titanic in her sleep, but I need the opinion of the users. See, James Cameron said he had left it up to the audience to decide whether or not her reuniting with Jack was a dream or if she had died in her sleep. He did have Gloria Stuart, the woman who played Old Rose, hold her breath to add to the suspense. So, what is your opinion: did Rose die, or was it only a dream?