Shout-out to Bastion ( @A113pixarfan ), who was the first to create from this prompt, and honestly, what they wrote was sublime.
I don't expect to top that, 'cause in my opinion, it was perfect.
But, nevertheless, here is my take on "Prehistory."
Adora eyed the spread of books and sheets of parchment on the table before her nervously.
"You, uh, do realize that I'm not really a scho-lar, though, right?"
George placed an encouraging hand on her shoulder and chuckled.
"Yes. We know. But you don't have to be!" he affirmed.
"That's right!" chimed in Lance as he plopped down onto the floor beside her. "We've already done most of the work. We just want you to check over our translations, and we thought you might find it interesting because there's a lot of Her-Ra--"
"She-Ra," corrected George gently, settling down on Adora's other side.
"Oh, right!" Lance agreed, throwing his hands up in the air and shaking his head. "She-Ra content! Why am I always getting that wrong!"
Adora shrugged, "Okay, well . . . I guess I could look these over . . ."
"Great!" George and Lance exclaimed, almost in unison from either side, causing Adora to startle.
George stood up, squeezing Adora's shoulder encouragingly. "That would be amazing!"
Lance gave her a quick hug. "Thank you, thank you, thank you!!"
Adora smiled at Lance. He released her and stood up to follow George from the room. "We'll give you some quiet time with the goodies!"
"Have fun!" called George looking back as they passed through the doorway.
Adora smiled and waved after them, then turned back to the documents and sighed.
---
It wasn't easy for Adora going through those records.
She couldn't help but be affected as she read through First Ones writings from hundreds and even thousands of years ago.
Her ancestors. The ones who damaged the planet to steal its magic.
Her people. The ones who abandoned her to the Horde when she was only an infant.
Who bequeathed trauma to generations of Etherians and harmed her closest friends.
And all so that they could create a horrific weapon.
But Lance had been right.
It was interesting.
Much of what she saw was clearly meant to preserve the "legend of She-Ra," for future generations, even if time transformed it into a half-understood myth for the Etherians of later times.
She read about how She-Ra would rise up to save the planet and unite the kingdoms in their hour of greatest need.
Her supposed abilities were numerous, and some of them Adora actually found laughable!
But there was so much that was tantalizingly almost said.
Little hints about what the First Ones might have been like.
Vague references to the "earliest" She-Ra -- who must have been Mara.
Adora smiled.
As smart as they were, the First Ones could never accept that She-Ra had existed long before they arrived on Etheria.
And the ancient records never mentioned Mara's name.
But . . . there were a few references to "Grayskull" and "Serenia."
And through those, she could follow the shadow of Mara's footsteps, so to speak.
Adora began to tear up as she read.
In some ways, it felt like Mara was a dear friend she knew so well, but in other ways, she accepted that she really didn't know her at all.
But finding her, however insubstantially, in the words on the pages, while knowing that she could never actually meet her or talk with her, left a terrible cold ache in her heart.
In the end, George and Lance were truly and beautifully grateful to her, and she really was glad to help them out.
But it felt really good to close the final book and turn away from a past that was dead and gone long before everyone and everything she really loved and cared about was born.
She realized now that she could never fully come to terms with it or understand it.
And in that moment, she finally knew and believed that she owed it nothing, and it deserved nothing from her.
She left her notes, and a bit of her love, with George and Lance, and she walked out of the library.
Adora's friends were waiting for her.