Frostbite lit a candle and flipped open a book: Apples of Ponyville. She needed to show her… cousin- she scowled at the word- that no apple had ever been or been with a non earth pony. Good thing Princess Twilight kept her library open near almost midnight.

Three hours later:
"Ugh. This is so boring." She sighed and faceplanted onto the book, another on the heritage of her family. There had to be an easier way to do it. Out of nowhere came a voice:
"Frostbite Apple?"

"Hmm?" She'd been awake for too long.

"You need any help?"

Her eyes also appeared to be failing her. She was completely unable to see the other pony in the room with her. "Who is that?"

"Saccharine. Remember me?"

Frostbite shook her head and got up. "I'm going home."

Saccharine followed her. Frostbite groaned much louder than she meant to, clearly annoyed.

Soon, they reached the outside of the Apple farm. "Don't you need to go someplace?"

"Oh, no. I live- far away. In fact, I haven't been in awhile."

"Uh-huh."

There was a few moments of awkward silence. "What were you in the library for?"

"Geneology. There's a certain pony that I need to prove wrong."

"Who?"

Man, she just didn't shut up, did she? "Pixie Core. She's an apple, but her mom's a… unicorn. Us apples are meant to be only earth ponies. Bringing another into the bloodline ruins it all. We're the longest all-earth-pony tree in all Equestria."

Saccharine thought for a moment- "I think I can help you with that."