Mary didn't say anything when Johnny mentioned the 'bad thing' she'd been through. It hadn't left her, but she'd done her best to move on. To survive. Some of that had occurred by swallowing her pain and her grief over losing Johnny and just carrying on. That was the Winchester way.
She took another gulp from a mini bottle and then stood. She should probably take a break from the alcohol for a little bit. She teetered a moment and then moved to flop down on the bad. She did smile at the mention of the dream.
"It sounds like a nice dream. I'm not sure I can even picture what it would be like to be away from the alien influence."
Of course, being away from the aliens would mean going back to the Johnny of her time, unlike this dream. She wasn't sure how she felt about going back to a Johnny who hadn't been honest with her and who didn't remember all of this. She wasn't even sure how she'd tell him that she knew, or how she'd feel about the fact that he'd lied to her. It was one thing to forgive this version of Johnny for something he wouldn't do for decades, but another thing to figure out how to proceed with the man she'd shared a bed and her heart with when he hadn't trusted her with his true nature.