Klaus laughs for the first time in millenniums when the blonde baby vampire tells him she's a threat to him. From that moment, he pegs her as the type of vampire who gets illusions of grandeur when they're turned. He thinks she's the one of those vampires who think themselves invincible and end up with a stake through their heart—or, more often than not, decapitated—because of their own idiocy.
He keeps her around purely for entertainment purposes. She's a beautiful little thing, and Klaus hates to see beauty go to waste. He spoils her and treats her as his queen. Each day, he surprises her with new dresses, new jewelry, new hair ornaments. She's his little doll.
Of course, Caroline remains as feisty as the day she came to him, and when Klaus is not amused by her modern antics, he's angered by them. There've been many days where she's upset him because of her willfulness and stubbornness and he'll hurt her.
Then she'll be angry at him for a few days, pouting in her quarters like an insolent child, until he bribes her with some finery.
He allows her to introduce him to modern things like movies and games and machines that brown bread for you. He doesn't tell her that these devices amuse him almost as much as she herself does.
After many years with her company, he kisses her for the first time.
She smiles. "I was wondering when you'd get around to that," she whispers next to his ear as she runs her small hands over his body. And the gifts that follow their first intimate encounter, he'll admit, are more for him than for her. Although she seems to enjoy them as well, for she always complains when he tears them in his frantic desire for her.
One night, many lifetimes later, when he's lying on top of her, she gives him the most seductive smile. "Remember what I said to you when we met?" she asks heatedly.
He nods. "You were so foolish back then," he admonishes gently as he kisses her throat. "So young and foolish."
He doesn't even see it coming.
There's a look in her eye that he's never seen before as she continues. "I wasn't lying," she insists.
And Klaus is no more.