And since, despite the world's admitted tendency towards situations best left in the more dramatic varieties of literature, it wasn't literally a stereotypical gothic novel, Kanimir didn't expect anything in particular to happen. If nothing else, there were far more storms that happened to happen at night than there were potentially literature-worthy shenanigans. So it's completely reasonable for him to be curled up in his grand library, enjoying a book on magical theory.
"Perhaps it would be useful to show you some relevantly magical things, and see what your method of detection gets out of them."
Kanimir goes and pulls what looks like some kind of almanac down from one of the shelves she's allowed to read from. "Any given fey gate isn't always open, but almost all of them have trackable conditions for when they are and aren't," he explains, flipping through it.
"Fey mages, who work with a completely different system of magic. I know...very little about how it works, which is still more than nearly any other non-fairy."
She looks slightly intrigued.
"A completely different system of magic? What do you know about it?"
"While the kind of magic I practice involves the manipulation of external arcane energies, fairy mages work with power that their bodies naturally produce. Also--" and he explains a handful of technical details that he's had the opportunity to observe over the years.
"I don't find it as interesting as magic which I am capable of practicing, but if I didn't think it interesting at all I would not have risked significant ire in order to learn it."
"How do they end up naturally producing magic...? I guess if you knew you would probably have said already."
"Perhaps. There are a few gates which human visitors can pass through without serious risk so long as they know what they're doing."
"It's possible that the reflections of different kinds of fae would be very different, and I don't think I have a safe way to see to it that you meet many different kinds."
"I'd be interested to find out what even one of their reflections looks like. What kinds are there?"