Taufik is a Carefree Person, he doesn't care what other people do, and what the consequence that they bring to this world, However, if this involves himself or his family, Taufik will not remain silent, he will do anything to prevent it, if it still not working then the answers is "kill".
And this affair with the Vampire is one of the Problems that involve him, without him, Tina Will not become a Vampire, and if Tina does not become a Vampire, there's no Vampire in this world other than him and Jenn.
So indirectly, what the Vampires have done, he feels a little responsibility in it, but he can't change what he has done, unless he goes back to the past again, however, this is a little troublesome and quite dangerous because Taufik doesn't has enough information about what happened in the century of emptiness, so that's why Taufik has to meet Tina first and hope to get something from her, even if it's just a little.