In looking at the answer choices, a few can be dismissed immediately. From the passage it doesn't seem that the dismissal of the narrator's questions affects her too much. Therefore we can eliminate answers that show a drastic change in the narrator's emotions (the narrator feeling inadequate, lacking control, and fearing she may be doomed). The only answer left is that the narrator is dismissed. In gothic literature women are often seen as helpless, innocent victims.
"ref" can stand for refund, refugee, or reference
The location is important because it shows that Gatsby is not from an old rich family, but rather that he is just some random person who suddenly earned a lot of money. The place where he bought his house is considered elite, but only for those who are new with money and are not considered to be some kind of "aristocracy"