The demon charges her. Dawn grimaces, turns to leave. Willow is standing in front of a mirror, very nervously adjusting her clothing. (Buffy looking at her) 'Cause being stuck in here with me, that would really suck, right? Everyone looks at Buffy. If you want us to spend time with you-
DAWN: I don't. XANDER: That's great! Stay with Spike. You made a wish to a vengeance demon.
Plan: A: Dawn; Q: Who wishes that everyone would stay with her? A: time; Q: What does Dawn feel nobody wants to spend with her? A: a wish; Q: What does Dawn make in front of a vengeance demon? A: the demon; Q: Who makes everyone at Buffy's birthday party unable to leave? Summary: Dawn, feeling that nobody wants to spend time with her, makes a wish in front of a vengeance demon that everyone would stay with her. Fulfilling her wish, the demon causes everyone at Buffy's birthday party to be unable to leave.