Final answer:
Without the specific context or passage from a text, we cannot answer how Emma knew that Donald didn't find the dollar where he said he did. In literature, such knowledge usually comes from inconsistencies, physical evidence, or prior knowledge of the event.
Step-by-step explanation:
The question "How did Emma know that Donald didn't find the dollar where he said he found it?" does not provide enough specific information or context from a text or scenario to accurately determine Emma's reasoning. Therefore, without additional details, we can't provide a definitive answer to how Emma knew about the dollar's true origin. However, this question is likely related to a passage from a book or a short story in which the context surrounding the event would provide clues to Emma's knowledge. Typically, in literature, characters may deduce the truth through inconsistencies in another character's story, physical evidence to the contrary, or prior knowledge of the situation. To answer this question correctly, it would be essential to have the relevant passage or text that details the circumstances of how the dollar was found and Emma's response to it.