Buffy glances between Sam and Dean and ... doesn't know what to do with any of this. Because she has an idea of what's going on and she doesn't like it. She doesn't like it at all.

" ... Since when did I become Buffy the World Hopper."

That isn't what she meant to say. But it's what comes out, and she doesn't sound all to happy about it. At least that's one of Dean's question's answered, though. So it's a step in the right direction.

"Can I just add in a 'where are we?' for good measure?"