Backstory: Isabella, or Bella, as she prefers, has been traveling with the Doctor for 3 years. She has dark red hair and blue eyes. She traveled with the 11th Doctor after Amy and Rory died, but before the Doctor found Clara. She left after 2 years because her mother was in the hospital. Soon after a tragedy hit the Doctor, Isabella returned to travel with her friend, the 12th Doctor. Enjoy!
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Isabella woke up in the middle of the night, sensing danger. She sat up and snapped. The lights flickered on. They were dim, white lights, but somehow managed to light up the entire room.
She put her bathrobe on over her nightie and walked outside of her room. She slowly walked down a corridor until she passed a room. At first, she had just walked right past it, but she heard a snap from behind and the lights had turned on, leaving her frozen in her tracks.
"Isabella, what did I tell you about roaming the halls in the night?" A small, slightly Scottish voice said from inside the room. Isabella turned around, walked to the room, and leaned on the door frame. In the room, there was an old man sitting in a read chair. He was wearing a black suit with red on the inside that made him look a bit like a magician. In his hands, was a book. A really old and really big book, from the looks of it.
"And what did I tell you about calling me Isabella?" She replied in a soft, smooth, calming voice. She had a British accent, but there was a hint of American. She never actually told the Doctor where she was from, but to be fair, he never asked. He didn't ask much about Isabella. All he knew was that she was a 22 year old Human Being from the planet Earth, and she was really clever and observant.
He always likes the observant and clever ones, her Grandmother had told her. Her grandmother had herself, in fact, travel with the Doctor for a while, but when she fell in love and got pregnant with Isabella's Father, she had to leave the Doctor.
"Sorry, Bella." The man corrected himself. "But I ask again, what did I tell you about roaming the halls of my TARDIS, in the dead of night?"
"You told me never ever ever to walk around the corridors of the TARDIS at night unless I had a very, very good reason for doing so." She said in a boring, dead tone, almost like she had said it so many times.
Although Isabella is clever and observant, that doesn't mean she's a not a bad girl. She usually only listens to the Doctor's "suggestions" if she knows he is being absolutely serious.
The Doctor raised his eyebrows, as if catching a mistake in what she said. He pointed at her, and said "You forgot an 'ever.'"
"Doctor, I had a good reason this time, I really did! I felt a lot of danger. Lie someone or... something, rather, is going to hurt one of us!"
"Yes, I feel that all the time. It's nothing. Go back to your bed."
Bella groaned, obviously annoyed. She went back to her room and semi-angrily snapped. The lights flickered off, and there was little light in the room. The only light was the natural glow of the TARDIS, and the light that leaked from the room the Doctor was "reading" in. But that light also died away in a matter of seconds.
She climbed into bed and got comfortable. As son as she closed her eyes, Bella felt a big shake, like an earthquake. She immediately ran out of her room and saw the Doctor already running towards the console of the TARDIS.
She walked into the console room and up the stairs. "What is it, Doctor?" She asked. "It is the danger I told you about?" She asked in somewhat of an I-told-you-so-attitude.
"Oh, it's worse than any danger you could ever come up with." The Doctor truly sounded worried. The Doctor didn't normally sound worried when danger presented itself, but the Doctor really felt worried. And the worse part was that Bella knew he was worried. She was scared way beyond death.
"Every TARDIS that was ever grow on Gallifrey," he said. "Was grown to sense danger on a scale of 1-100. That scale was named the Rassilon Scale, after guess who. If the danger reached 97, it would show a line, If it reached 98, it would show two lines. 99, three lines. 100, four lines. One line is bad. Really, really, really, horribly bad. Two lines is Time-War-Bad. Three lines is the equivalent of two Time Wars happening at the same time. Four lines? It means danger worse than 1,000 Time Wars happening at the same time, same place. Nothing in the course of Gallifreyan History has shown a record of the Rassilon score even reaching 74, I believe. I didn't even think there could be another danger about 74, which was the Last Great Time War."
"But I thought you said that 98 was Time War bad?"
"Oh Bella. The Time War only earned itself a 74."
"Well what's it at now?!" Bella said, scared beyond the Afterlife.
"Take a guess."