Hayley's expression darkens when he mentions that Clark is still sick. She knew the Kryptonite made him weak, but didn't realize its effects would last for so long. Although she knows she should have done more research, she doesn't know how. It's not like she can just ask about things like that.

By the time she finishes preparing her coffee to brew and turns around, her features wear a mask of neutrality to mirror Jor-El's own. Then she returns to the living room where he stands and takes a seat on the arm of the couch only a couple yards away from him.

"You get why I couldn't tell you, right? I mean, I know he's your son and you'll probably hate me for it, but it was the right thing to do knowing everything I knew then." She's not sure knowing that Superman was Clark would have entirely changed her mind, but it would have made a difference. "Oh and I'll keep his secret, obviously, so you really don't have to worry about that."