How did Calpurnia and Atticus feel when Scout criticized Walter in To Kill a Mockingbird?

In Chapter 3, Scout watches as Walter Cunningham Jr. pours syrup all over his meat and vegetables. Scout is disgusted and asks Walter what the "sam hill" he is doing. Atticus quickly glances at his daughter and shakes his head as a sign of disapproval. Nonetheless, Scout continues to protest until Calpurnia requests her presence in the kitchen. When Scout walks into the kitchen, Cal chastises Scout about her rude behavior. Calpurnia tells Scout she has no right to criticize Walter for the way he eats and she needs to stop acting "so high and mighty!" (17). Cal also tells Scout she needs to start treating her company with respect. Both Calpurnia and Atticus are ashamed and upset at Scout's criticism of Walter Cunningham, Jr. at the dinner table. While Atticus simply shakes his head at Scout, Calpurnia lectures her about treating others with respect.