Luna, on the surface, is acclimating to the new world and the society of ponies that currently inhabit it. She pretends to be alright when really, she is still haunted by the betrayal of her sister.
Celestia thinks Luna is adjusting well and has turned a new leaf from her nightmare moon days. She has no clue that her sister is still hurting from sins of the past.
Each lonely night makes Luna realize just how dreadful her life is and contemplates vanishing from Equestria. She decides that tonight, while all ponies sleep, she shall make her silent disappearance from their world.
Proof-Read and Edited by :Rain Walker
Art By: Some-Pegasister at Deviant Art