THIS STORY IS MARY SUE! IF YOU DON'T LIKE IT, DON'T READ IT!
Also, I don't know when I'll be continuing this story. I'm waiting on the muse to bite me with a good idea.
Disclaimer: Everything Doctor Who related is copyrighted to the BBC. Everything else is mine, up to and including Alien Lisa, her house, and the layout of how Alnilam looks.
Part One
Lisa had to take the Doctor to Alnilam, because it was the only place she could be certain of that was safe. Nothing could harm them there. Nothing would dare. Alnilam was protected by the magic of the unicorns.
The Doctor had been overcome by something that had caused him enough pain to pass out. He and Lisa were alone, so she had to bring him somewhere safe, and the only place she could think of was her home planet. It was a good thing that she could fly the TARDIS. She couldn't fly it well, but she could get it to a planet. Whether it's the planet they were aiming for is a different matter.
So Lisa brought the Doctor to Alnilam and put him in one of the many bedrooms in her house in the small meadow. As of this moment, he was asleep, but it was a troubled sleep. He was tossing and turning and groaning. It was worse if Lisa wasn't there with him. Even sleeping, he knew when she was at his side. It was part of their link.
Lisa knew he was still in pain, because she could feel it as well. That, also, was part of the link.
When Lisa falls in love with someone and they share the feelings, they become linked. They are able to feel each other's pain and sense what the other is feeling. If one were to die (Lisa is immortal and, therefore, cannot die), the feathers on Lisa's normally yellow-gold wings would turn blue, then black, then, one by one, the feathers would fall off and disintegrate when they hit the ground as death was taking its toll. Her wings would be completely black when that person died. She would also feel as if she were dying. It was the only part of the link she didn't like, even though sometimes she could lock some of it out.
Now, Lisa was sitting at the Doctor's side, holding his hand and wiping his face with a cool cloth as he slept. He had a terribly high fever. Lisa could give him something for it, but he had to be conscious to take it. She had loosened his shirt and taken off his scarf so he would be more comfortable.
Suddenly, Lisa heard the familiar wheezing, groaning sound of a TARDIS. She stood and went to the window and saw a blue blob materialize next to the Doctor's TARDIS. It took shape and that's when Lisa's jaw dropped. It was a police box, identical to the Doctor's TARDIS.
As she watched, the door opened and out stumbled a tall, attractive young man in a cricketing outfit and tan coat. There was a stick of celery on the lapel.
Lisa almost passed out herself, because that man there was none other than Doctor Number Five, three regenerations before the Doctor she was with now, Number Eight.