Why does Mrs. Costello speculate is the reason why Winterbourne agreed to go to the castle with Daisy? What is the excuse she makes for him and do you agree with it?

When Winterbourne returned to his aunt that evening he told her how he had spent the day at Chillon alone with Daisy. Mrs. Costello shuddered at the thought of such a girl. After we have seen Daisy react to a series of events, Mrs. Costello throws in the typical European opinion of Daisy's flaunting about Europe. Mrs. Costello's "sniff" at the smelling bottle is symbolic of her feelings of superiority over Daisy but also of their everlasting differences. Daisy is a fresh, sun-loving flower whereas Mrs. Costello must reach to the stuffy contents of a bottle.