Kylo isn't quite so overwhelmed by that sudden burst from Vader, but he's still a bit stunned. He had wondered about the exact relationship between Vader and Obi-Wan, and he can't claim to understand it even now, but that certainly gave him some clues. And the implication that he and Obi-Wan had had a connection in any way similar to his and Rey's is... interesting, to say the least. And a lot to think about, some time other than right now.

He can feel just how unsteady Rey is. Not only from the way she's gripping his hand and seems to have stopped breathing. He feels it almost as if it were his own panic, enough that it takes him a moment to register the request she just made.

"Yeah. Okay." His gives his grandfather a meaningful glance as he gently pulls away from his touch. Don't worry, I'll take care of her. His attention then turns to Rey, taking a brief moment to make sure he's going to be steady himself before standing and offering a hand to help her up.