Ten Years' Transformation

Twilight was fifteen when she got unfortunately blown to bits by an Element of Harmony mishap. She comes back ten years later.

Ponyville thinks Twilight Sparkle is dead. They even set up an elaborate tombstone for her. But, during ten years in a dimension far away, reliving memories and being completely bored altogether, Twilight Sparkle slowly becomes a princess.

***This should NOT be taken seriously by any means. This is just a 'what if' sorta thing.***