Why was Sai Baba angry at Anna and Mavshibai for fighting, and how did he punish them?

The source material does not state that Sai Baba was angry with Anna and Mavshibai. In fact, Chapter 24 specifies that Baba would watch quarrels neutrally. In this particular incident, after the quarrel between Anna and Mavshibai escalated, Baba did not get angry or punish them. Instead, he devised a "powerful trick" to cool them down. He lovingly and humorously told Anna, "I don't understand what is improper in taking a kiss from the Mother." This witty remark pacified both of them, ended the argument, and caused a sprout of loving laughter among everyone present. His intervention was one of reconciliation, not anger or punishment.