The alive part makes sense, considering what Nell is saying about woods. On the other hand, the train itself is.. kind of alive.. but maybe it's different, because it doesn't seem to be a natural thing, and is instead something that was probably made by someone..?

.. Madoka tries to keep her thoughts away from the train, since that only makes things feel complicated. She shakes her head - lightly, since the baby Dralite is still on there - and tries to focus again.

"Is that a power you've always had, miss Nell?"

It sounds like it, given that she's even speaking about what it was like in her own woods. That must meant she could already do this before she ever showed up on the train.