Alas, if only Inigo knew that it was human specifically she was scared of, he would be a little bit more careful about approaching her.

But he has no idea. And, granted, is kind of an idiot. But at least he's a well-intentioned one, since he can't really see her sitting there by herself without wanting to make sure she's alright. She doesn't exactly look alright.

"Milady, forgive me for the intrusion, but.. is there a problem?" Other than being stuck on a train hurdling through the void, anyway! That's clearly totally normal.