"Now that Venturia's on better terms with the rest of Atlantis, I imagine that there's been a surge of interest in your people's culture in the rest of the country."
"I'm not sure what a dozen outdated scrying spells would do for interstate relations, but I suppose it can't hurt to write to a few noteworthy historians. Do you need any help getting home?"
Always amusing to see the points of contrast between Paragon and Renegade.
"No, I'll just call Jean to open a boom-." No, sound travels further under water. "A hush tube."
"My ears thank you."
No
joke. Whalesong can be heard
hundreds of miles away, and you can just
imagine how far the sound of a nuclear detonation or a massive geological upheaval can travel.
I take out my focus crystal and reach out through Earth's thaumosphere towards the crystal with the exact same magic attached to it. Yes, I could.. probably use that as a teleport anchor, but Venturia has a lot more magic research going on in it than Canterlot did, and a lot more delicate equipment. I don't want to damage anything by performing magic-intense spells outside of a shielded environment when I don't have to, and making the thaumosphere my plaything would count. Instead, I wiggle the crystal and use a simple piece of sympathetic magic to make the one at the other end wiggle as well.
Their mages would probably thank you for not setting off anything disruptive near their
delicate experiments...
The hush tube opens soundlessly a moment later, and I step through into.. my laboratory.
Haaaaa. I can feel Celestia's magic even from here. A slow-burning fire… Contained. Trapped. I wasn't an alicorn when I came to Earth-. Celestia doesn't know how to use magic as a human. As far as I know, her special talent isn't magic, but… That's a lot of magic not going anywhere.
Like dropping a bowling ball onto a trampoline... I bet more than a few insightful mages, and even a few gods, are looking that way asking 'what
is that?'
"Jean, can you boom tube me to wherever Celestia is?"
"Certainly, Sunset. Celestia is currently watching Grayven and the children play with their sledges. Boom tube opening n-"
Straight to it, then.
BOOM!
"-ow."
"Thank you."
And we come back to the end of yesterday's chapter...
Don't think about it, just go.
I step through the portal and I'm outside in winter in Denver. I'm binding the concept of unnatural heat and the closed circuit to myself before I even see… Celestia, wearing.. some sort of less evil-looking version of Grayven's armour. Her hair's the colour of her mane, and her armour's the colour of her pelt. I'd-.
Love that casual, barely-thinking-about-it bit of spell work. Shows how
skilled she is.
There actually are things I'd like to ask her about how she finds it, turning from a pony into a human. Things I'd find weird asking Luna about. But that can wait.
Grayven nods to me, pats Celestia on the shoulder -and whaw is the size difference more obvious when everyone's on their hind legs- and then walks off to give us space.
I expect Celestia stands like 6' 4", compared to Sunset's much smaller frame. Supermodel height to match supermodel looks.
Okay.
"Hey, Celestia." I start marching in her direction. "You look human."
Don't mind the slight redness around her nose.

It's
totally just the cold, and not her banging her face on the floor earlier...
She does… A human version of that nervous smile she does when she doesn't want to set me off but knows full well that she's going to anyway.
"Hello, Sunset. You do as well." She looks me over. "Grayven asked that we avoid melting the snow."
Oh,
very subtle. Suggesting that Sunset would be more likely to do something messy?

You didn't even realise you
did it, did you, Celestia?
"It's not that hard to make a spell that keeps you warm without warming up anything else. But that's not why I'm here."
"What did you want to talk about?"
Be glad it's not Twilight Sparkle you're talking to, or she'd have an itemised list or three...
Hundred.
"Why a history book?"
"Why a history..?"
Well, there's an
interesting angle to lead off with.
Huh. Surprised that was the first thing I came up with. … Go with it.
"Why was that what got me kicked out. I get it, you had this whole thing planned for me to maybe become an alicorn if that's how things shook out with Luna, but I'd been ignoring your whole plan for months at that point. I clearly wasn't going along with it. But it was a history book. I kinda assumed that you thought I read one of the other books, but when Grayven asked you about it you didn't even bring that up."
I mean, the whole wing was forbidden for
some reason, after all.
She looks away for a moment.
"Did Twilight tell you about Predictions and Prophecies?"

...
Not seeing where you're going with this, Sunbutt.
"No? What's that?"
"A book that was part of my plan for freeing Luna. I ensured that a copy was placed in the bookcase in her room in the observatory, and another in the Ponyville library, to ensure that she could discover the information that I needed her to know."
Because the first place Twilight would look for information on odd celestial occurrences
would be her library...
"I.. think you know that I agree with Grayven about that whole thing, but what's that got to.. do…"
Luna wasn't mentioned in a single book I read in Canterlot. Nightmare Moon was a silly story no one really believed.
...Oh.
Oh...
"It had history in it that you didn't fabricate. It talks about what really happened a thousand years a-."
"No. It just had a different fabrication. Something that would help my little ponies fight Nightmare Moon if my preferred plan came to nothing and I was banished from the world."
Because if you had a thousand years to lay plans, why
not go whole hog and orchestrate the entirety of Equestrian History?
…
"Do you ever consider just not lie? How did you even..? Get every single historical record!"
...I mean... Consider who would be
writing the history books: Graduates of her schools, who would come looking for personal insight on historical events..
"Slowly. I made sure that the Royal Archive bought diaries when they came onto the market, and made sure that I omitted certain information when ponies interviewed me to ask what I remembered. I also had control of the books that were used in history classes. But I strongly suspect that there are many records of Luna hidden away."
"And no one found them. Because that would be a lot of work to find out stuff about a part of our history that isn't all that interesting anyway, and there are plenty of published books if you really.. want to read something."
People like Twilight Sparkle
would probably be the ones to find them, though. Surprised she doesn't have some hidden monastery somewhere that keeps the True History well hidden, though. Or would that inevitably be found out too quickly?
That sounds like a conspiracy theory. But as Grayven pointed out before wiping out the British government, just because you've got a theory about a conspiracy, that doesn't mean that you're not right. Conspiracies exist, and people sometimes work them out by collecting evidence.
"And no one knew about Luna to ask, no one went to the Castle in the Everfree because it was in the Everfree. So why didn't you..? I don't know, give me Starswirl's Unfinished Spell? That didn't have anything to do with Luna, and I wouldn't have kept asking you if I had something concrete to work on."
A spell that distorted bonds of friendship linked with the caster... In the hands of someone who had no use for friends?
"Because it wouldn't have helped you learn to use the Elements of Harmony, and that was my top priority."
"Oh, so Grayven was right."
Ironically, it
would go on to give Twilight Sparkle the push she needed to Awaken, though...
"No, Grayven wasn't right. It was my top priority, but not my only one. You would not have been able to use Starswirl's Unfinished Spell."
"But that would have made me read up on him. I could have learned what I needed to do, and that would have motivated me."
You'd have been in the same boat as him, though, unable to use it
because of the lack of needed bonds.
"Without knowing about the Elements of Harmony?" Celestia shakes her head. "I don't believe that it would be possible to form the emotional bonds necessary if you were doing it just to gain power."
"You mean that I might have had to learn lessons about friendship to get what I wanted?" I shake my head. Good to know that I don't revere Celestia at all anymore. "Why exile?"
I don't know... Look at the Renegade. He has bonds that parallel all of the Elements. We
saw Artemis tagging the fusion of him and Grayven-16 with them in order to...
Reboot the Renegade's personality.
"Because I didn't know what you read, and couldn't ask you what you read without letting you know that there was something I did not what you to know. And I knew for certain that you would not be able to do what I wanted my student to do, and I did not have enough time to train you and somepony else."
…
"That's a lot of honesty all at one."
And for once, she
does have a point. She was already
wary of Sunset's growing desire for knowledge... She could easily have
panicked, picturing Sunset going the same way as Luna did.

It doesn't
excuse her actions, but it casts them in a new light.
"Someone suggested that I consider not lying."
I did.
"Fine. Since you finally got the message, let's keep going."
After all, you still have the inevitable breaking down of old walls, the teary reconciliation and the cathartic tears to get through. Oh, wait, this isn't a Narrative Stereotype scene.

No need to lean on cliche here...