That brought a small smile to the Doctor's face. In his mind, she'd always be the twentysomething he traveled with, but he tried to turn the image of her in his mind, struggling on roller skates, into the older woman Alan fell in love with. It wasn't easy, but he could do it.

"I remember the first time she rode in my flying car," he said. "She was so startled that it was flying. So new to everything."