"I am!" she agrees. "I'm not at all sure what you are. I don't think I've ever heard of a sort of person who looked like you."

"I'm, um, I'm a human."

"Oh," says the tiny blue unicorn. "...Are you okay? Can I help you?"

"We come in all the usual colours," she says. "Of which blue is one. But I guess if I've never heard of humans it makes sense that you, reciprocally, have never heard of blue unicorns. In fact, you're a step ahead of me in having heard of unicorns at all. Where are you from, and how did you get here from there?"

"I came from my friend's house, but if I'm not supposed to be here I can go."

"You're perfectly welcome in my library," the unicorn assures her. "Oh - I forgot to introduce myself, silly me. My name is Blueberry; what's yours?"

"I'm Emily Lark."

"It's very nice to meet you, Emily Lark! Have you been in Ponyville long?"

"No, I just got here."

"Did you come to the library in particular for a reason, or are you just sort of wandering?"

"Just sort of wandering. Books are great, but I wasn't looking to necessarily get one today."

"Well, I happen to think the library is an excellent place to wander to," she says. "What kinds of books do you like? I like most everything."

"Oh, lots of different stuff, the last thing I read was for school and it was about some old-timey humans."

"Ooh, history. What were the old-timey humans up to?"

"They were going from one human country to a different human country because the first one had people from a third human country all over it getting in their way."

Blueberry giggles. "That does sound like the sort of thing that happens in histories."

"It was a fiction book," Emily clarifies. "But it was about real countries."

"Which countries?"

"Denmark and Sweden and Germany."

"I've never heard of any of those. They must be very far away from Equestria."

"Well, they're all human countries, and you hadn't heard of humans," says Emily reasonably.

"Yes," she agrees. "It's perfectly logical, it's just also really interesting."

Fidget. "Well, I hadn't heard of Equestria until recently either."

"Are there unicorns near where humans live? They must not be very much like the kind of unicorn I'm used to, if there are."

"Not near enough that I ever saw one, unless they were hiding, really really well."

"Unicorns can be sneaky, but we'd have to be very sneaky indeed not to stand out in a country full of humans," says Blueberry. "I don't think even I'm that sneaky. Unless I learned how to shapeshift, I suppose..."

"I could. Probably. I'm not sure if there are any spells for it in this library, and if there are they might be hard to learn. Can't hurt to check, though, I suppose." She grins. "Research project! Do you want to help me look?"

"Okay." She starts looking at book spines.

Well, those don't sound like they're about shapeshifting. She keeps going.

Well, there's Dictionary of Obscure Magics by Artichoke. That looks promising. The same author also wrote a series of four travel guides to interesting-sounding places, a short cookbook, and a treatise about dragons.

She checks the dictionary of obscure magics.

Well, that's interesting, then. "I found this book with a section on shape-changing."

Blueberry pokes her small head out over the edge of the library's second level. "Ooh, Artichoke," she says. "Anything good in there? I'm looking through a book on artifact creation I ordered a while ago, since you seemed excited about shapeshifting and you probably couldn't cast unicorn spells yourself, not being a unicorn."

"Moderately. But I did order a book on how to make artifacts. Would you like one?"

Nod nod.

"This should be fun," she says cheerfully. "Let's just see..." She starts reading the section on the Amulet of the True Form. "Oh, that's nice, it has safety features so it won't do things like turn a sea serpent back into a sea serpent while they're still on land, or an earth pony back into an earth pony while they're flying around as a bird..." Pageturn. "And it looks like it won't be too difficult to cast. I just need a necklace to cast it on. Do you have one you don't mind using? If not, I'm sure we can find one."

"I don't have a necklace."

"No problem, I can go find one," Blueberry assures her. "Would you like to come with me, or stay in the library?"

"Not usually!"

"I'll just stay here and read these interesting books then."

Emily watches.

"There," she says, when she's read the whole section through twice more. "All set. Goodness that spell is complicated. Just set your necklace down on the floor, please, and I'll cast the spell on it."

Put.

She almost picks it up, then hesitates. "Will it only work if I put it on, or if I'm just holding it too?"

"It only works when you put it on, and even then it waits to turn you into your true form until it would be reasonably safe and comfortable for you to be your true form right then," says Blueberry.

"Comfortable like not falling out of the sky, or..."

"Like not falling out of the sky, or not being a sea serpent on land, or not being a dragon underwater."

She bites her lip a little and picks up the necklace and puts it on. Nothing happens.

"Well, I guess either that's your true form or your true form is something that has trouble moving around on land or doesn't breathe air or is too big to fit in the library," says Blueberry.

"Neat!" says Blueberry.

Flap, flap. Not enough to take off, just stretching the wings. To the somewhat limited extent griffins can grin, she is doing that.

Blueberry giggles. "Were you stuck as a human for a long time? Do you want to go outside and fly?"

"I've been stuck as a human for so long! Are - there griffins here, too, not just unicorns, will people think it's weird if I'm out being a griffin?"

"There's griffins! Not very many of them nearby, but they're not unheard of. And Ponyville is a nice, friendly town, I'm sure nopony will pester you."

The sky is clear of both clouds and ponies, except for a far-off grey pegasus.

She does not need to meet a pegasus right now. She needs to figure out how to make turns correctly. Swoop!

Blueberry's prediction was correct: nopony pesters her. She can figure out her flying in peace.

The amulet does not indeed turn them into any non-winged things while they are flying around as a griffin. It is such a convenient amulet that way.

There's a river! It looks reasonably placid as rivers go, and pretty roomy.

Is there a nice private riverbank?

There are a few of those available!

The amulet's convenient properties extend to providing each true form with whatever clothing the relevant occupant prefers.

And now this river has a blue-haired teenage mermaid in it, scaled tail rippling under the water, wearing Traditional Seashell-Based Attire.

It is improbably comfortable for attire based on seashells. What an extremely convenient amulet.

The tiny blue unicorn has tidied away most of the research and is reading the rest of the artifacts book. She looks up and waves a hoof when the griffin returns. "Hello! Did you have fun flying?"

"Yeah! Thank you so much for making the magic necklace for me."

"You're welcome!"

"Sure!"