She thinks of mentioning that she knows who he is, that she has met him before on the train, or at least some other version of him, but she doesn't know if he has actually been told about that yet. If not, she doesn't wish to unsettle him.

So she just smiles a little, grateful for finding the same easy acceptance and respect as before.

"I would hope to be friends, too. I have heard much of you, and I was once lucky enough to treat a companion of yours who spoke highly of you." She falls silent, looking down at her hands. "I only wish to be a doctor here on this train, regardless of my name."