The next email he sends her is a blank with an attachment that turns out to be profiles of various acquaintances of his detailing their skills, magical traits, relevant personality details, and other potentially useful tidbits.
"There's some extremely salient information omitted for privacy reasons, I should warn you, but all in the category of 'things they can do,' not emotional landmines or similar that I expect you to trigger as a result of not having the information."
"I understand. Can you give me an example of something like that which you might have redacted if it were real? If there's not that many things it could be you could flip a coin to decide whether to use a real or fake example."
"Someone is a werewolf, and prefers not to let this be known because they prefer not to be viewed through the lens of the traumatic attack that turned them. That's a fake example."
There's his sister's...friend, who is a remarkably talented biology student, has a penchant for getting into trouble through seemingly random but suspiciously insistent chance and getting out of it through a combination of skill and moxy, and is relatively promiscuous but has a healthy helping of self-respect on the topic.
There's the rest of their charmingly named "B-Squad," who each have their own talents.
There are several of his and Mehitabel's fellow magicians.
There are several vampires and a few other near-humans. There are a small handful of fairies. Rannsi is on that list, actually, although he doesn't seem to know about Antarctica and does note that he hasn't seen her in centuries.
"I wanted to see Fairyland. I was six at the time so I spent a fair amount of the visit riding a unicorn around but I also visited Rannsi and her daughter."
"Perhaps I should look into re-acquainting myself with some of my old contacts. All my information on Fairyland is at least a century old by now."
"I suspect it would take more than a hundred years and the Second Coming of Christ to change that."
"I suspect there must have been some political maneuvering I wasn't expecting if Rannsi fin Vraikis vai ten Sarafel has a child. Her faction was not particularly in favor when last I was appraised."
"She's colonizing Antarctica? Her name is different now, it's vai ten Drask Uraeh."
"That would be a change, yes. In that case I definitely think I need to catch up on fairy politics."
"You'll probably pick up more than I did when I was six, I'd be interested to know what they're up to when you get back."
"I suspect that I will ultimately resort to some level of espionage in addition to above-board discourse, in which case I assume you are capable of being discreet about any piece of information I indicate is not public knowledge for any definition of public, but I would still prefer to transfer any such information over a more secure communications method than email."
"I assume you have some reasonably public but also reasonably discreet place you wouldn't mind meeting. I can teleport."