All he can get out is a snort. It's a comment to everything she said. An unspoken you have no idea...

Dean looks at her because it's all he can do. Words are lost to him, and they're usually his best line of both defence and offence. As far as action goes... what can he do but throw back that shot and motion for a top up?

He could leave, obviously. Get up and make some excuse about having to go somewhere and do... something, but he's glued to that damned bar stool, and all he can do is stare at her. Tell himself that she's just a nightmare after all. He'll wake up with a shout and this hell will be over.

Any second now.