Making complaints to governmental agencies is privileged. So she wouldn't win on the bases of making the complaint even if the information you provide is proven false in a defamation suit. She would have to prove real financial damages as a result of your (false) complaints to win anything in a civil suit. And then it still could not be based on your complaints to the government. It would have to be based on something else. If you were to post on social media about your actions and that resulted in financial loss, for example.

But if she can find an attorney who will file suit, you still will have to answer it. Cha-Ching!