The Doctor gently kissed Ada on the cheek, before turning back to the TARDIS. Although the blind girl had no idea what the TARDIS was, somehow she knew as the engines began to groan, that the Doctor was leaving.
"Goodbye my monster," she whispered, as the TARDIS noise faded. A single tear rolled down her cheek as she turned slowly to walk away.
"Is she going to be alright?" asked Clara, her arms crossed as she leaned against the console.
"Ada? Oh... hmm... she'll be just... fine," brushed off the Doctor, flicking switches.
"Really?" asked Clara, doubtful.
"Yes! Of course she'll be fine. They always are."
"What do you mean they always are? How can you know if you go running off as soon as it's over?"
The Doctor spun to face Clara, his expression one of grief, anger, and uncertainty. "Of course she won't be alright. She's blind, with no family to look after her, in Victorian England! She has no way of surviving, and they don't exactly have disability pensions yet. She couldn't be further from fine!" He threw his hands up in the air, frustration taking hold. "Don't you see?" he demanded, "I leave because they're never alright. It's all well and good to stop the crazy people from killing the majority of the population, but I'm nearly always too late for some people. I don't want to tell Ada the truth that she'll end up as a beggar and dead on the streets. I don't want to see the families cry over those who I couldn't save. I run, Clara. This is what I do. I've been running for a thousand years because I don't want to look back!"
Clara took the Doctor's hand and rubbed it gently. "If there's one thing that I've learnt from people, it's that they tend to remember the worst, not the best," she said. "But maybe the past isn't that terrible. Maybe if you look over your shoulder, it's not all bad behind you. What about the people that you save who otherwise would have been cold in their graves, Doctor? All the good things that you've done, by blocking it all out, you forget all the good things you've brought to this world."
The Doctor looked up, his sad eyes pleading.
"It doesn't have to be goodbye," smiled Clara.
She tapped her way along the pavement, back to where her cursed mother had destroyed her life, when an unnaturally strong wind picked up, and she heard it again. That creaking and groaning that had taken her monster away. It was back.
Author's Note: This is just the start, I thought I might set up the story first. Yes, I know, I'm still working on other stuff, but I just had to write this after last episode.