He's coming now, The Doctor is dying, but while this chapter is ending, the story never does...
***
Location: Time Vortex
Time Frame: N/A
Derpy slept peacefully on the floor of the TARDIS, the Doctor observing her somewhat guiltily. He had been holding in his regeneration too long, it was becoming volatile, it exploded out and knocked Derpy unconscious, she was fine thankfully, but this incident had made the Doctor realise it was time.
"Derpy, before I go I want you to know you were brilliant, just completely brilliant," the Doctor said to the unconscious pony.
The Doctor approached the console in pain and put in the coordinates for his final destination, Canterlot Castle. He had promised to return when the time came and he intended to keep that promise, besides, he didn't want to die alone.
Location: Ponyville
Time Frame: 1785th year of Celestia's reign
Princess Twilight Sparkle sat quietly on her bedroom balcony, observing all of Ponyville high up from her castle. It had been two months since the Doctor regenerated and destroyed the Canterlot throne room in the process, rebuilding had only just finished! But in all those two months there had been no sign of the Doctor or Derpy.
Twilight had to wonder when and where the Doctor will appear again, when she see's them again will it be moments for them after the regeneration, or will it be...
As if on cue an unusually sickly sounding TARDIS materialization began to echo throughout the whole town, looking up Twilight just caught a glimpse of a familiar blue box crash landing right smack bang into the centre of Ponyville.
"Spike, send a letter to the princess! The Doctor has just shown up, and I think it has been mere minutes for him!"
With that Twilight took to the skies and flew towards the crater at the centre of town.
"Here we go again," Twilight said with a chuckle
The End
Isn't it?