Based on the narrative in Chapter 3 of the book, how do Penny and Frankie show their politeness to Mrs. Wiederhorn during their meat delivery stop at her house?

Based on the narrative in Chapter 3 of the book, Mrs. Wiederhorn invites Penny and Frankie in, and offers them lemonade and cookies. Penny and Frankie therefore, graciously step into her house, and accept the lemonade and cookies that Mrs. Wiederhorn has offered.