How does Amal react when Tia comes into the women's restroom at the start of Chapter 11?

Amal is minding her own business, engaging in her wuduh before she goes to the storage closet off of Mr. Pearse's office for fajr. Suddenly, Tia comes into the restroom and starts bullying Amal about what Tia considers Amal's strange behavior. In contrast to previous episodes of bullying when Amal remained quiet and boiled with anger only inwardly, Amal stands up and confronts Tia. Amal tells Tia that yes, she washes her feet five times a day, and that means that her feet are easily five times as clean as Tia's face.