[Those fate has plans for tend to have affinities that others don't. It's what makes them special. It's the 'gift' to balance out the hardships waiting for them, but Diarmuid doesn't say this out loud, just like he didn't mention who he guessed the vampire was before. Some things are better left unsaid.]

Is that why this vampire was after you? Because your family holds a power that could so easily kill him and you had a special affinity for it?