Real Me

In which we learn that Buffy's little sister has a mind of her own and she's tired of everyone treating her like a kid. Also the Magic Shop - WAIT! Sister? What's going on?

Official back-of-box synopsis:

Sibling rivalry heats up, as Buffy begins to resent her little sister Dawn's constant presence. That is until Buffy has to rescue her from Harmony and her gang of vampires.

From the old WB Buffy website:

SLAY, SISTER, SLAY - While Buffy and Giles heat up the training, Buffy and Dawn's sibling rivalry gets them into trouble when a new gang of vampires target the slayer.

Links:

This episode's page at http://www.restlessbtvs.com/, the Restless BTVS Trivia Guide

This episode's page at http://www.vrya.net/bdb/, the Buffyverse Dialog Database

Cross-reference:

episodes in which vampires are staked with unusual or amusing objects:

• Band Candy
  Buffy stakes a vampire with a pencil during SAT prep
• Choices
  Willow levitates a pencil into a vamp while captured in City Hall
• this episode
  Mort meets his death by ornamental unicorn

Cast:

• Sarah Michelle Gellar as Buffy
• Alyson Hannigan as Willow
• Nicholas Brendon as Xander
  

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• Anthony Stewart Head as Giles
• Kristine Sutherland as Joyce
• Mercedes McNab as Harmony
• James Marsters as Spike
• Emma Caulfield as Anya
• Marc Blucas as Riley
• Amber Benson as Tara
• Michelle Trachtenberg as Dawn
• Bob Morrisey as Crazy Guy
• Tom Lenk as Cyrus
• Brian Turk as Mort
• Chaney Key Minnis as Brad
• Faith S Abrahams as Peaches