Answer:
Tita believes that when Mama Elena dies, she is free of her commitment, and as you can see from the story, Tita has been entirely free to love Pedro and do anything she wants since meeting him. This, however, is not the case; her responsibility persists. Because she was not allowed to marry or have a relationship since she was meant to serve her mother. She is reminded of her responsibilities by Mama Elena, who clearly is upset by what Tita did; she is outraged and informs her.