'You coming to bed?' he says.
'Yes,' she answers, and does not move. She might, at this moment, be nothing but a floating intelligence; not even a brain inside a skull, just a presence that perceives, as a ghost might. Yes, she thinks, this is probably how it must feel to be a ghost. It's a little like reading isn't it - that same sensation of knowing people, settings, situations, without playing any particular part beyond that of the willing observer.
'So,' Dan says after a while, 'Are you coming to bed?'
'Yes,' she says.

From far away she can hear a dog barking ....