Buffy as Tooth Fairy

I can't remember the title or the author but the story involved Buffy as a new Tooth Fairy who was assigned to William but gets Spike instead. It is all a plot by the evil head of her Tooth Fairy Department (Riley) in order to discredit and then control Buffy. It was a really funny story, completing tongue and cheek, and I'd love to read it again.

Can anyone help?

It is The Tooth Fairy by Sotia but she took it down. we are not allowed to exchange it. for more details see click link above.

Thank you, that explains why I couldn't find it under the "Tooth Fairy" title.