According to the text in Chapter 9 of the book, what contributes toward Penny storming out of the house on Saturday afternoon when Mr. Mulligan stops by to watch the ball game on television with her?

According to the text in Chapter 9 of the book, what contributes toward Penny storming out of the house on Saturday afternoon when Mr.. Mulligan stops by to watch the ball game on television with her, is his incessant talking while she is trying to watch the game.