I honestly think the administration intentionally spreads resignation rumors from time to time, using specific details with various people to see what comes out the other side, in order to identify suspected leakers.

https://www.cnn.com/2018/11/13/politics/donald-trump-kirstjen-nielsen-dhs-removal/index.html

https://www.nbcnews.com/politics/donald-trump/after-clashes-first-lady-others-kelly-may-soon-exit-white-n935686

https://www.wsj.com/articles/trump-has-decided-to-remove-homeland-security-secretary-nielsen-1542126979

https://www.vanityfair.com/news/2018/11/trumps-post-midterms-blues-roil-the-white-house