"Aha. Yeah, I can do that."

"So... How does it work?"

"Mm--there's a sort of connection, when I first cast the spell, sort of like casting a net, and then there's a sort of--bridge--between our minds, and if you focus on it you can send thoughts across, and I can connect to more people while the spell's active but I need to designate an initial target and if for some reason I can't connect to them the spell just fails."

"Sounds super handy for coordination."

"Yep. Way more information density than almost anything else."

"Exactly what we need to teach you the fine points of Tesla Cannons, at least as much as I know them myself."

"Telepathy is the best."

"It's a bit odd to me but a tool is a tool. Let's do it?"

Edie incants the spell.

The telepathy-trigger is a lot like the triggers for her transformation or spells, in a way, perfectly unobtrusive until she goes looking for it and then completely obvious, but it involves only mental action, no physical side effects like casting one's own spell.

"Testing"/nervous/This is strange

Coming through perfectly clearly/I wonder why so many people find it strange/most natural thing in the world to me/well, it'd be an odd world if we were all alike.

Odd, also bad, yes/Like I said, this is a handy shortcut to me not much more/This is a good example of a Tesla Cannon, you can tell it's one because of this and this...

Edie pays careful attention to the Tesla Cannon construction.

And the physics of it, translated much more elegantly than words could manage - and the overall style of operation, how you can tell when one is about to fire (the subtle prickling) how machines strained for power will take much longer to charge and recharge the things - unless Edie can pluck an entire field of intuition out of her head a bunch of examples of Tesla Cannons firing and where the shots go and where they might have gone instead (they're a bit random) -

Edie cannot do this unless Walta has enough self-knowledge to pick it out of her own head!

It's alright if I forward this stuff, right? she asks at one point.

Probably don't know myself that well/Also my psyche is a mess lately (fear/panic/watch everyone for threats/warm fuzzies at having something close enough to friends again)/Anything that it doesn't seem like I leaked, yes, you can forward.

She nods.

They can get through a lot of this pretty quickly, this way. Also they don't have to do the whole thing all at once.

Walker operations and typical weak points. Her world's national political situation, in reasonable detail. How the blacksite she was work-camp-interned at will probably never do anything useful but they should maybe destroy it anyway (it's supposed to be a teleporter). Other dangerous things the Nazis should no longer have: Various military hardware and the nuclear research facility up by Hamburg top the list.

And then, yeah, let's take a break.

She finishes funneling her sister all the relevant information and they acquire relevant books from bar and start discussing whether it's worth trying to preserve anything to metaphorically beat into plowshares.

She comes back fron her break eventually and opines that: Probably yes. The ships and some of the lighter walkers, stripped of guns, could be used for various things. Some parts of Tesla Cannons could be converted into power infrastructure. Et cetera. Industry in general is finally taking off again and trying not to destroy too much capital would be ideal. Then again there is a risk reward thing - doing too little damage to the Nazis would be bad.

(She kind of hates turning potentially-lost-or-saved lives into numbers like this, even though it's probably smart to, that leaks through when she asks to telepathize some fine detail for a moment.)

Edie reinitializes the connection briefly to accept the detail.

They're drawing up best-case lists of known spells that people they know or have heard of have; if they could get enough magic on board to save everyone that would be fantastic but they're not at all sure that's feasible.

Planning a coup takes a while, doesn't it? Walta keeps track of the conclusions they make on a big bulletin board thing.

Well there's also the issue of a lot of the more prominent people that they don't have as strong connections to being liable to not believe them and therefore not show up at all--but with enough time they can plausibly produce sufficient evidence.

...If newspaper articles from the (admittedly unlikely) interdimensional bar don't work. Walta's memories relayed by Edie might be an option.

Newspaper articles are the kind of thing plausibly faked. She was thinking more along the lines of specs for or actual instances of technology from Walta's world that would have been non-trivial to create and better used by almost any metric on other things than trying to fool someone into this.