Very nice. I like how you contrast the complexity of the situation with simple, short but effective sentences. Loved the affirmative repetition you use in the last few sentences.
"I'm not stupid, you know. I'm fifteen."
Heeee! :)
Anya and Dawn fold their legs into pretzels and do a spell, just like Willow and Tara used to, sexy and too heavy for them.
I love the way you wrote that and how you incorporated a moment from canon into the story.