His instinct is to put himself in front of her, knowing they're walking into danger, and it's hard to hang back, but he does.

Until they reach the stables and find silence. He continues to follow her, but when nothing happens he moves away from her, looking around.

"Doc? Kate?"

It's a relief not to find any bodies on first glance, but now he's wondering what happened. He looks towards the door, then to X.

"I'm pretty sure Ramon was leavin' when I saw him. Maybe Doc an' Kate cut out another way."