The Stained Glass Window
Fire surrounded the Doctor and his companion, and the silent screams of dying soldiers echoed in their ears. The Doctor looked around, quietly muttering to himself and occasionally yelling out. The companion, Arya, stared at the Doctor, already knowing what was to come.
Four years ago, a young woman approached the companion. She spoke of things that Arya did not understand. The woman told the companion of a man called the Doctor and his blue time traveling machine. She asked Arya to make the right decision when the stained glass window shattered. The woman said it would not be easy, but the Doctor would understand.
The Doctor and Arya ran to the TARDIS, in the middle of a tall, grassy field.
"Hurry Arya. We need to leave, now," the Doctor said to her. Suddenly, Arya remembered the young woman's words. Arya steeled herself, and looked at the Doctor.
"No. We can't keep running away, Doctor."
"Arya? What do you mean?" the Doctor asked, surprised. "I told you from the very start, being my friend wouldn't be easy. "
"I have to stay here, they need me to help them. Don't you see? This was meant to happen. I must stay here, to complete the future. There was a reason why you found me, Doctor. You brought me back, unknowingly, to this particular past. Perhaps the TARDIS knew didn't you, girl? You brought me back to stay here and fix this crumbling nation, because, if I don't, my future will have never have happened. Isn't that right, Doctor? I finally believe you now when you said I was special."
"No, no," the Doctor whispered. "You don't have to stay, Arya. "
"I do. You taught me that tampering with timelines is dangerous; if I don't do this, then it will be tampering with the timeline. You must understand, you must let me stay. If you don't believe in me, as you always have, how do you expect me to believe in myself?"
"There are parallel worlds! You can let another future happen!" the Doctor pleaded with her. But he knew Arya was right, and she knew that she had won.
"Good bye Doctor. Its been a pleasure, truly it has," Arya said through a sad smile.
Then the TARDIS started glowing, and the Doctor had no choice but to follow his only companion that never left. Arya watched as the TARDIS slowly faded away, then walked away from where the TARDIS had stood. She walked through the empty battlefield, refusing to look at the lifeless bodies strewn about. Arya finally reached her destination, an elegant stained glass window in the castle depicting the same grassy field the TARDIS once stood upon. Array searched the smooth surface, but to no avail. Not even the smallest crack in its glossy color existed. Arya looked up towards the sky, whispering, "What have I done?"