Elisa lives in the Salinas Valley. Why did this make her more willing to talk to the man traveling in the caravan?

Many of John Steinbeck's short stories and novellas take place in the Salinas Valley, like "The Chrysanthemums" and Of Mice and Men. Steinbeck grew up in the Salinas Valley, and he knew the area well. Therefore, many of the characterizations he presents in his texts are realistic.
In "The Chrysanthemums," Elisa, the protagonist, lives in the Salinas Valley. She is used to travelers passing her home. This time, however, the caravan does not simply pass by. It stops.

Elisa, squatting on the ground, watched to see the crazy, loose-jointed wagon pass by. But it didn't pass.

A man approaches Elisa, asking her if he is on the right road to the Los Angeles highway. One reason Elisa is willing to speak to the man is that he is seeking out information that she has.
Elisa continues to speak freely with the man for a couple of reasons. First, she seems to spend a lot of time alone. Her husband is at work, and there does not seem to be another family close to where she lives. She may be lonely and enjoy the company. Second, she does not seem to feel threatened by the man. He does not act hostile.
Lastly, Elisa may openly speak to the man because he is cordial and friendly. He also takes interest in her garden and, more specifically, her chrysanthemums. She is proud of the flowers, which grow to "ten inches across." The man openly praises her "green-thumb," stating that she "has a gift with things." Elisa enjoys this praise, and she easily continues her conversation with the man.