"That was what I said, too."

Carl gives her a tight smile, because while the fact of the matter is simple: he's temporarily (he hopes) stuck here on this base, in the future, in a world where the wildlife tries to eat you on a daily basis...it's still Trudy, and he is happy to see her, regardless of the situation.

"I guess...I should say 'hi', though. That might help."

He's not sure anything will really help how fucked up this situation is.