Who is Jane from Hollywood: A Novel and what is their importance?

Jane is the Chinaski's real-life drinking partner, and it is Jane's life and experiences that formed the basis of the character played by Francine Bowers in the film. Chinaski portrays Jane as being angrier and more violent in her feelings and actions than he is, and he refers to her as the only person in his life with the same contempt for the human race he had.