"Grecias,"whispered Marta. "I'm sorry I misjudged you." what could you this statement reveal about the theme of stereotypes?

This takes place after Esperanza hides Marta from the immigration officials. Marta was an antagonist to Esperanza yet Esperanza shows empathy for Marta by hiding her. Marta learns that she stereotyped Esperanza as a spoiled entitled girl. Esperanza had changed as a person and Marta now sees this.