The reader doesn't sense the depth of anger. Prompted Prompts are lines of dialogue meant to elicit a response. Though used in real conversations, prompts are lazy writing. Unfortunately, prompts are common, especially in mass-market fiction. There are dozens of prompts, all worthy of deletion from a manuscript.
Real emotions vary in intensity and duration.
Fictional characters often fail to return to a calm state. Good writing requires heightened emotions that explain motivations and allow for confrontations. Cruel doesn't describe her. There is a fine distinction between dramatic effect and melodrama. Emotional dialogue contains hyperbole, with more passion than real conversation.