Final answer:
Mia's status as a whistleblower under the law is unclear based on the information provided.
Step-by-step explanation:
According to the information provided, it is unclear if Mia is a whistleblower under the law. However, the passage mentions that whistleblowers and government employees sometimes provide journalists with tips or documents to prompt investigation into questionable government practices. This suggests that for someone to be considered a whistleblower under the law, they would need to disclose information about illegal or unethical activities within the government to the appropriate authorities.