"It's not that everything ..." she begins, before cutting herself off and summoning a diagram of the standard model.
"Everything in my entire universe is composed of these twelve types of particles held together by these twelve types of binding. The spell you demonstrated contained many of these, but also an additional four types of particle that I hadn't seen before," she explains. "In my universe, that would imply the existence of a few more particles that I didn't see due to a deep tendency in nature called 'symmetry', but they would have related predictable properties."
"It is entirely possible that your universe isn't so clean -- clearly, things are a lot more complicated than I was expecting, given that apparently a multiverse exists, and the way that I thought things worked is wrong. You're absolutely right that we don't actually know for certain how things will work until we try. But those 4 extra particles in your magic and the others they imply look very flexible. I think -- although I haven't actually reverse engineered it yet -- that they probably suffice to build very wildly different spells, in the same way that the twelve basic particles of matter are enough to build cats, dandelions, boats, and stars. So in some sense, those few particles existing is sufficient to explain very different kinds of magic."
She gropes for a metaphor suited to his apparent tech level and life experience.
"It's like finding a house full of bodies with stab wounds, and a bandit standing outside shouting about how he stabbed the mother. Yes, it's entirely possible that the bandit only stabbed some of them, and that the others were stabbed by a secret group of cultists living in the basement, but if you had to put money on it you'd probably assume that the bandit was responsible for everything."
"So if we get the chance to figure out whether fixity crystals work through teleport barriers, we should. And probably we can figure that out in the first few milliseconds after the door opens, since you said we were near the Worldwound. But until we get more information, my guess is still that even very complicated magic will still be the same fundamental kind of thing as the magic you showed me."
She shakes her head to clear it.
"I understand if that doesn't really convince you. I've spent my life working to understand the smallest parts of the universe, and that's given me some intuitions, but this is a very strange situation. The responsible thing, because time is stopped, is probably to come up with a plan for both cases -- what to try if my teleport suffices, and what to fall back to if it doesn't."
"As for calling allies -- I meant trying to teleport them here very quickly so nobody notices, although we could also duplicate them so that we could have them here without anybody being able to see that they had gone. I don't like to do that without asking for permission, though, because it can be very upsetting for people. Does that change your answer, though? Are there people who would be useful to work with only if not teleported, or vice versa?"