It was pretty clear to Sam that Lisa was in a pretty hefty amount of emotional pain right now. As her expression changed before his eyes he felt a wave of sympathy for her and he frowned slightly, wondering what, if anything, he could do to help her.
He sat down on the couch next to her when she spoke again, brushing aside the slight panic that she hadn't seen Dean either. He would have to deal with that later, the last thing he wanted to do was freak Lisa out any further. He nodded slowly. "He came to see me after I....came back." He said gently. Sam sighed before he continued talking. "Lisa, I don't really know what's going on with you and my brother but....is he the reason you're so upset? Because he hasn't been here?"