Where is there verbal irony in “the open window”

Sappleton leaves the French window open every October afternoon in anticipation of the arrival of her husband and brothers who left on a hunting excurion three years before, never to return. The second instance of situational irony is when Mrs. Sappleton enters the room and ask Mr. Nuttel if Vera has been amusing him.

Explanation:

if you want me to check your answer i agree with what you put. i read the story

sorry but whats the question?