Cam is dipping a grilled cheese sandwich into a bowl of tomato soup when he feels the summons. He goes ahead and grabs it. Doesn't even drop the sandwich.
"The door has been here for a decade and will continue to be here unless I tell it not to continue. I would very much like it to continue existing, therefore it will be here when you return."
When it's done, he opens the door, hops in, salutes at her through the front pane, generates dense fog cover - and takes off.
The trip is about as uneventful as covert space reconnissance of an unknown planet can be. As expected, the planet is a mirrored earth - except for China and Australia, which appear to have become an enormous volcanic archipelago with highly unusual weather-patterns.
"Welcome back, casual circumnavigator. Did you discover anything interesting?
"Yeah, China - whence the language you thought sounded churchy and one of the ones you couldn't identify - and also Australia - have both been replaced with a lot of volcanic islands."
"That is rather interesting, considering that that area is what I would call Oceania, whence of the unusual rumors."
"It's hundreds of years old. Quite possibly as old as the Imperial Line. I would say 'Victoria' but that would be unhelpful."
"In my world Chinese in all its dialects is extremely old, but I'm not sure we're going to get anything much out of this kind of spotty view of history - no offense, I'm sure I wouldn't know much world history either in a world with no Internet and no casual intercontinental travel."
"History is not my field, no." Lioncourt smiles. "I would expect you might have better luck in one of the scientific libraries in Victoria."
"Quite possibly. But even down two wings and a tail I don't know if I could conduct myself inconspicuously."
"At least looking like a child tends to make me beneath suspicion." She smiles lopsidedly.
She shrugs.
"Life goes on, and we've just got to do the best we can with it."
"... You have screens that display images. Of course you also have methods of recording images. Please forgive me for forgetting that photography exists."
Cam smiles good-naturedly and pulls his computer out of his pocket and shows her Oceania.
"As you said, it hasn't got anything like the shape of your world, unlike everywhere else in my world. Would you mind bringing up the mirrored map of your world again?"
"... You know, this would probably be a lot more enlightening if I were a geologist. One thing that does leap out at me is that there are no additions - there's no extra landmass from your own world, only additional ocean. Perhaps there was some sort of natural disaster in my world that sank most of - China, you said?"