A/N - It was a toss up between this excerpt or a particular brutal interaction. Takes place during "Time Heist".

"So they've got something we all want."

"Wait. So what do you want?" Clara asked Elise.

Elise's mind was running a mile a minute.

"Elise?" her father asked.

She swallowed. "A...a way to make someone immortal."

The Doctor looked at her, trying to figure out why that was her greatest desire.

"Why?" he asked her.

"Why what?"

"You're already going to live pretty much forever."

Elise rolled her eyes. "For love."

"Because of..."

"Don't say his name."

"That's incredibly selfish."

"I learned from the best. Goodnight." Never let him see the damage.

As she walked away from him, the Doctor realized something. He'd done this to her. The way he'd raised her had turned her into this closed off young woman.

This regeneration was a mirror to him, showing him all his worst traits.