School Hard - S2-E3
Vampire: And when I kill her, it will be the greatest event since the crucifixion. And I should know, I was there.
Spike: You were there?! If every vampire who said he was actually at the crucifixion really was there, it would've been like Woodstock!
Angel: I did a lot of unconscionable things when I became a vampire. Drusilla was the worst. She was...an obsession of mine. She was pure, and sweet and chaste.
Buffy: You made her a vampire.
Angel: First I made her insane. Killed everyone she loved, visited every mental torture on her I could devise. She eventually fled to a convent, and on the day she took her holy orders, I turned her into a demon.
Buffy: Cordelia, your mouth is open, sound is coming from it. This is never good.
Hank Summers: At least when she was burning stuff down, I knew what to say.
School Hard - S2-E3
Spike: You know what I find works with Slayers? Killing them.
Xander: I think I'm having a thought. Oh yeah, that's a thought. [Gasp.] Now I'm having a plan!
Xander: Are we overlooking the possibility that she may be very attracted to me? ... She's possessed.
[Buffy accidently attacks Xander, and Xander jumps back.]
Xander: Man, Buffy. My life just flashed before my eyes. I gotta get me a life.
Chosen answer: From what we see in the series, certain girls are identifiable as potential Slayers - Kendra clearly fell into this category. The identification method is presumably mystical in nature, but the Watchers' Council are pretty effective at that sort of thing, so they're quite good at tracking down the potentials ahead of time. Not perfect, though - it does appear that Buffy herself may have slipped through the net - certainly she had no inkling of what she was until she'd already taken on the role of Slayer. It is possible, however, that this was actually cultural - an American family would hardly be likely to turn over their daughter to some strange man for 'training', so the Watchers might have chosen to keep an eye on her covertly, whereas some other cultures (like Kendra's Jamaican parents) might be more willing to believe.
Tailkinker ★