I saw this UA by EMositeCC where Twilight was born an alicorn, and was adopted! Here's a link: www.deviantart.com/emositecc/a…

Shady was walking down the trail to her home.

Shady: Man I can't wait to get home, I hope Trouble Boots is behaving!

Suddenly She heard a should bush shake sound.

Shady: what was that!?

She turn to the bushes and see something moving.

Shady: It's a timber wolf or a pont eating dragon! or maybe It's...!

Baby Twilight pop right out of the bushes.

Shady: A baby Alicorn? That something you don't see everyday. But where are her parents.

Shady look around for anyone who will come looking for Twilight.

Shady: Ether they are alive or.... I can't here her out here alone! I must take her home with me!

Shady pit up Twilight and put her on her back.

Shady: hang on.

Shady took Twilight home with her.