She just gives off that vibe. Microexpressions on her face. This video, while a parody, serves as a useful video in that you can see the expressions caught on film.
https://www.youtube.com/watch?v=v75wCTMZoSY
OMG...I hadn’t seen that before. LOL She does have a skeptical look on face and she leans away from him a lot.
I truly hope we’ve heard the last of him.