what might have happened to Curler's wife if she had not been killed. Would she leave Curley? Would she go to Hollywood?

Curley's wife feels trapped by her marriage and her circumstances. During the novel, she lacks the social and emotional maturity to define herself enough to leave Curley. Indeed, she is so isolated that Steinbeck does not even give her a name: she is just Curley's property. Had she lived, she might have eventually done something different but that is just speculation. Her Hollywood aspirations are a reflection of her lack of maturity and understanding of the world. This was also depression era and Curley offered her some amount of economic security. You will have to write a fictional piece about her on your own.