Final answer:
The question lacks context and clarity, and it does not align with the provided text excerpts, making it impossible to provide a correct answer.
Step-by-step explanation:
The question seems to be referencing a mix of texts and is not directly related to a specific event or narrative. Unfortunately, the question is unclear and lacks context, making it impossible to provide an accurate and informed response. The excerpts provided from different literary works do not seem to align with a scenario where Mildred uncovers something while cleaning, nor do they involve characters named Montag, Beatty, or Lucy.
In order to provide a helpful answer, it would be imperative to have the correct context or text in reference. The question may be conflating characters from various stories or may not be accurately recalling an event from a specific work of literature.