"It does that. The door, I mean. No one here has yet figured out how, but take comfort. You should be able to leave again, right back to where you were, by the door you came in through."

She doesn't lift her hands to gesture. Just in case.

"The one behind you. Though if you'd like to stay awhile and learn something of the place, getting out of the way of anyone else coming in might be considered polite."