Gillian Berrow

Gillian Berrow, also credited under G.M. Berrow, G. B. Mint, and A.K. Yearling, is basically the renasance woman of My Little Pony, writing for many episodes, webisodes, spin-offs, novels, and even doing voice work and music here and there.

My Little Pony: Friendship is Magic
Friendship is Magic season 5 Friendship is Magic season 7
 * "The One Where Pinkie Pie Knows"
 * "Fluttershy Leans In"