"Well, perhaps you should talk about it this time then."

If Lena insists on not wanting to, or if Alice gets a sign that it's a painful thing to talk about, then she may back off on it. It's not like she wants to hurt some random person on this train like that, after all.

But for now the curiosity is still too strong. Lena can't just mention it and then not explain what it is.

"I've never heard of such a place before."