Warned people? It was her idea because she thought it would be an easy win!

https://www.washingtonpost.com/politics/bill-clinton-called-donald-trump-ahead-of-republicans-2016-launch/2015/08/05/e2b30bb8-3ae3-11e5-b3ac-8a79bc44e5e2_story.html

https://www.salon.com/2016/11/09/the-hillary-clinton-campaign-intentionally-created-donald-trump-with-its-pied-piper-strategy/

https://www.washingtonpost.com/news/politics/wp/2017/09/12/assessing-a-clinton-argument-that-the-media-helped-to-elect-trump/