At 25:18 When Dawn responds to Glory's question with "Buffy", Dawn no longer has the anointed dark mark on her forehead that she had in previous scenes.
When Spike explains that Glory and Ben are the same person...he tells everyone that only humans will forget the transition. But Anya forgets, despite being a demon. Anya, like Spike, isn't a pure human...even though she's no longer practicing vengeance. This is proven by the fact that Anya can go back to being a vengeance demon whenever she chooses.