The reaction of the TARDIS confirmed what Sam had been thinking-- that it had more of a soul even than the Impala. In fact, it seemed to be alive, for all intents and purposes. A living ship which had opinions of its passengers: that was something you didn't run into everyday. Even when what you ran into every day was pretty high on the scale of weird.
At least it seemed to be friendly. Sam didn't really want to know what would have happened if the ship didn't like her. "That's good," she said with a slight smile. "I think I like her, too."
And that was true. The warmth and brightness was inviting, and although there were doubts in her mind about the dangers that could come with the ship being alive, she didn't feel unsafe in it. She actually felt very safe in it, and somehow she got the feeling that the ship's defenses were stronger than the thin wooden police box doors would suggest. The grace of an angel could make its vessel impervious to almost any attack; somehow she suspected that the life-force inside the TARDIS, whatever it was called, might have similar properties.
Her mind spinning away in the background, she listened with half an ear to what the Doctor was saying. She caught the request to hold down the button, and moved forward to do as he asked, placing her thumb against it to press it down. The movement brought her attention back to the present, and she looked over at the man running the ship, wondering what it was that had caused the TARDIS to get all banged up. Trouble, probably; he seemed to be the sort that would run into trouble.
"No," she said, offering him a small smile. "I'm with you so far, I think." He was rambling a mile a minute, but she was making sense of most of it. She wasn't sure exactly how helpful she was being, but she was doing something, and feeling useful for the first time in a while. Curiously, without letting go of the button, she tried to lean over to see what the console was showing him.