"Hi, Johann. We had a graduation accident from our magical school from a different masquerade it is infohazardous to speak too much about certain aspects of, and are both traumatized and unable to contact our families, that's our deal."

"Eliza told me. I'm sorry about the trauma. And being unable to contact your families. But mostly the trauma, honestly." 

"Most people have less complicated relationships with their families than we do." 

"True." 

"I think all three of us were looking forward to seeing ours again."

"I'm glad to hear it. It may be possible for us to help you get home, but the risk of infecting our world with infohazard monsters is, I admit, concerning."

"Well, I haven't seen any yet? I don't know how encouraging to find that, I've never heard of this happening before."

"I don't think any of us know how to evaluate that. We should probably talk to, like, adults, who are experts on planar theory."

"If you have those then yes by all means."

"We definitely have those! Portals and Aethernautics are both fields of magic that should be relevant."

"You think it's another plane, not another masquerade?"

"It'd explain the phone."

"Well, other planes exist, and the phone thing seems pretty hard to explain just by separate masquerades, and the idea of separate masquerades requires that nobody managed to conjoin them before now."

"Or that previous occasions have been covered up."

"That's why I said conjoined and not punctured."

"I don't think it's that much more confusing than mundies not knowing in the first place? I guess it's probably easier to convince witches and wizards of each other existing."

"Once you've already passed through one veil of ignorance, the next one becomes more plausible, in my experience."

"But we don't have that. - usually, anyway."

"So it's only relevant one way, but it's still relevant the one way, some of the time. Anyway, regardless of how plausible it is for two ancient magical conspiracies to coexist in mutual ignorance, there's still the phone thing. We could probably get a Diviner to confirm."

"That sounds good, do you have one handy?"

"I'm taking a course on divination this cycle, I'll email my professor asking for a favor."

"Must be neat having teachers. Our school doesn't have teachers."

"...How...?"

"The school magically sets and grades assignments and stocks the library and suchlike."

"Why?"