How old should the Doctors companion in my story be?

How old should the Doctors companion in my story be?

young(12 or younger)
young(12 or younger)
4 votes
teen(13-19)
teen(13-19)
3 votes
adult(20-40)
adult(20-40)
1 vote

Comments (5)

I little kid would be adorable >3<
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on November 23, 2014
She should be a teen.
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why
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of course
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on November 12, 2014
Well, it'll be cool if the companion is young.
Meaning, there will be more feels. :3
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on November 12, 2014
About Author
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on November 12, 2014
About Author
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on November 12, 2014