Because if she thinks she knows what other people are thinking by the looks on their faces, and views herself through the facial traits and eyes of another without that person VERBALIZING or communicating those feelings----she needs to see a shrink. (Or lose weight and act feminine.)
She presumed he was thinking negative things about her; his mind could have been ANYWHERE. The aftershow party. The woman he was with last night. A sick relative. Money issues. Damn, anything.
Trick question. He is in the NFL.