Emma Heming Willis doesn't know how much time she and her girls have left with Bruce Willis. "Giving and allowing the girls some space from Bruce also helps prepare them for his death," Heming Willis, 49, wrote in her book, The Unexpected Journey, which hit shelves on Tuesday, September 9. "I know how dark and jarring that sounds, but that is the harsh reality of the world I must navigate to continue to protect our girls the best way I can." Heming Willis noted that she doesn't have a "specific timeline" for Willis' condition.