"Okay, I'll wait."

"What's your world like?" She asks while she starts to tinker.

"It is an Earth, pretty close to the standard despite having witches, sapient bears and daemons. The year is 2010 and I live in the United States."

"Ahh, good old Earth. I don't really miss mine. Came straight out of one of the nastier parts of history when I fled it."

"Oh? Which one?"

"Germany, 1926."

"Do you want a hug?"

"You already gave me one earlier. And I'm over it, really."

"Alright.

I don't think you have an standard Earth? They usually don't have walking robot armor by 1920's."

"The point of divergence is Charles Darwin. He figured out genetic engineering in our world. The walking armor borrows a lot from animal anatomy and kinematics."

"Wow, genetic engineering I think that is only like, fictional in our universe. What sort of things it can do?"

"...Mm, borrow a book from Bar later? I never quite got over being terrified and disgusted over them if I have to talk details."

"Sorry."

Shrug. "Everyone has buttons." Something clicks in the little device. "Okay, if it doesn't do that again in five minutes I think it's good. I wanna go start on the big version of this."

Temperance waits.

Walta reads a book.

The charger doesn't fail again.

Temperance reports this.

"Nice."

"Cool. Can you teach me the basic principles so I can teach my clan sisters how to produce their own? Maybe make bigger versions?"

"Eh, that'd take a while... How about blueprints your world's engineers will be likely to understand?"

"That works." Temperance shrugs.

She goes over the very basics anyway while tapping away at her computer, this is how the engine-bit works and turns a heat difference into motion, this is how the generator turns motion into electricity...

"Mind if I get you working on the big version of the same thing? Make them as hot and cold as you can while still being sure it'll stick, please."

Sure thing. Temperance starts working on the bigger version, making a couple of experiments with heat and cold, before finally arriving at an optimal point of spell-stability and temperature.

"Here are some blueprints."

Which Temperance happily accepts and keeps in a plastic bag for her belongings that disagree with water.