[She does not appreciate that tone Willow. She's just trying to understand.] Then why doesn't he know?

I know what a sire is. [The demon world she understands...everything else...not so much.] Well, sometimes evil can be attractive to people. Or I remember Xander trying to explain to me that sometimes people do weird things when people die, maybe doing his sire is his way of dealing with his grief over Buffy?