[Visibly uncomfortable, her descriptions have made him feel ill. He's going to need some time to soak that all in. That's a lot to think about. He says simply:]

...I didn't know.

[He's quiet, wringing his hands together. He knew she would understand, but this worries him. All their good intentions... they really only want to do what is best...]

I...

[He hangs his head. While he decides how to feel about the situation, he may as well tell her why he's asked.]

This has nothing to do with you, I promise. But..

There's an immortal leader, in our world.

[He sighs deeply.]

I didn't know what to think about it until now.