Apparently the FBI is using me as a source

I got an email from a lady who came across one of my casefiles doing research for a book she’s writing. She asked who had written the summary. I told her I had. She replied, “You may be interested to know that the FBI liked your write-up so much that they used it as their narrative of what happened to [the missing man] and sent it to me as part of a settlement to a FOIA [Freedom of Information Act] lawsuit. I presumed they didn’t write it, so I wanted to know who did.”