It does the trick, as after the stranger speaks to her again, the girl shows a little more of herself in leaning out from behind the trunk up to showing one shoulder and her entire head and neck.

"Nautilus? How do you know it's far away from where I came from? ...do you know how I got here?" It's not meant as a suspicious question, but Annie does realize that if someone knows she isn't where she was and a far way from that place, there's at least the possibility that being was involved in the transition.