Sarah Jane Smith
Insane. That was her first impression, gained while running through a castle somewhere in medieval England, pursued by aliens. This man was insane.
Overtime, she grew to know him, this alien with a human face. She came to love him, and came to hope that he might feel the same for her.
And then he dumped her in Aberdeen, leaving her to pick up the shattered pieces of her heart.
He didn't mean to, she realised when she settled down enough to think. She realised (or perhaps she had known all along, and was only just now getting around to admitting it), that for all his appearance of humanity, he was an alien, and a law unto himself, even amongst his own people.
To quote the classics:
"He'll be coming and going. One day you will see him and another you won't. He's wild, you know. Not like a tame lion."
That was the Doctor, all over, Sarah Jane Smith, former Companion, reflected. Not a tame lion. And for all his seeming humanity, he was just as wild and alien as that fictional lion.
A/N: Just little character sketches I've had on my hard drive for years; I decided to finally upload them. This story is technically complete, but I reserve the right to change my mind and upload more.