LadyLavinia
Scooby
Oh, it's not so much the fact that Buffy kills the knights that I have a problem with. There was no other option at that time. It's the fact that she doesn't seem to care. It's never mentioned again.
Although, I suppose it could have contributed to her going catatonic. It would have been nice to have seen some kind of recognition though. It wasn't all that long ago that she was beating on Faith.
Why should Buffy even care, considering that Caleb not only had the ability to kill her, but had the power and the will to do so?