She didn't know, Sam and Dean never spoke of vampires. She was now almost certain that there were such things since she knew werewolves existed, however, she never met one. She didn't particularly care to meet one either. From what she understood all supernatural creatures were essentially evil, including herself. She knew that silver killed or inflicted pain on werewolves, but that was about it.
'I never really thought about the vampire myths,' she stated with a shrug. 'These days they've gotten quite flashy and romanticised. Vampires don't scare people anymore. They've become a kind of sex-symbol and a rather gross one at that. I guess the idea of drinking blood isn't appealing to me.'