The reason Kendall was such a horrible person:  She was a slayer of the undead!!

Now that she has found her niche, we're all a lot happier.

If you haven't done so already, check out Sarah Michelle Gellar in Buffy the Vampire Slayer on the WB Network.  It's A great show.
  
Now that Kendall is not torturing Erica and Bianca I like the actress a lot more.  I used to hate her when she was on AMC