She is described as a tart. Curley's wife is described as a “girl,” not a woman.
Explanation:
When her hair is described as sausages, it reinforces that all of the men on the ranch, including Curley, look at her as only a piece of meat. She is a sexual object, and nothing more.
Answer: Because he wants to save her from being killed. Although Giles Corey is tortured and eventually executed by the court, he still manages to defeat the court.