Who is Liza Weston from Women and what is their importance?

Liza Weston is described as thin with dark hair. Graceful, she moves with the ease of a professional dancer, who complements her movement by wearing long dresses. Liza visits Henry and stays at his apartment during a business trip. She later lets Henry accompany her to her home where they give into their passions for several days. About a month later, Liza again visits Henry, but finding him still drunk, argumentative, and a filthy boor, she realizes that she is not interested and leaves.