Why does Curley's wife come into the bunkhouse?

In Steinbeck's 'Of Mice and Men', Curley's wife evidently often comes to the men's bunkhouse. She stands in the doorway and enquires "Anyone seen Curley?" So she comes to the bunkhouse to find her husband.

However, although the story in the book indicates that she often comes to the bunkhouse, it doesn't say that she ever actually comes into the bunkhouse.