Twilight is forced to leave Equestria, for it can't stand without the Empire of the Diamond Ponies. When she leaves her homeland, she must find her land's safety. The realm of the Diamond Ponies. [Written in Third Person and my sequel to the MLP episode, ''The Crystal Empire''. This takes place after The Crystal Empire.]
Written by: Princess Cadenza
I'm just continuing this for any one who reads this story!
Side story: Diamond Princess: Skies' Nightmare