Kili, look at me. Do not be ashamed, speak to me.

[He's no Fili, but he wants Kili to understand that he shouldn't be afraid of talking to his brother. That will only make things worse. Thorin brings a hand up, resting it on the side of Kili's neck, moving around to carefully grasp the back of it. It's meant to be a connection between them, to be reassuring.]

It's fine to be sorry, but you must be sorry and work forward from that. Do not linger too much or nothing will be solved.