To explain much more, mostly to weave tales of where he was from, would surely confuse the girl even more - best to let it all sink in. As resilient as the human mind was, it could only handle so much before going into shutdown or breakdown mode. Killian aimed to avoid both right now.
"Well, if you need me, you know where I am. I'll leave you be now, however, for the moment," he said grandly, and tapped the edge of the doorway with his hook - the actual door itself, he'd pull behind him when he left. "I'm sure I'll be seeing you soon, Miss Claire."