'Leaving Las Vegas' isn't ripped off. But she did admit to being high or drunk when she recorded it.
(from "Rock on the Net")
Along the way to success, Sheryl encountered some hardship as well. Sheryl told Rolling Stone: "It's unfortunate in some ways that the record did so well, because I lost friends over it." One of the "Tuesday Night Music Club's" members, David Baerwald was a friend of John O'Brien, author of Leaving Las Vegas. Sheryl's song of the same name was thought to be more of a product of Baerwald and O'Brien's words than Sheryl's life. Soon after Sheryl sang the song on Late Show With David Letterman and acknowledged to the host that the song was autobiographical, O'Brien committed suicide and a friendship was lost between Sheryl and Baerwald.