Sleep is about the last thing he can stomach right now, but he knows it won't be long before his body needs it, flesh and blood human that he is. Maybe shorter bursts would be better? Less room for nightmares to creep in or his former Master to slither in to his vulnerable mind.

She makes her... offer, invitation, whatever you want to call it, and for a moment he wonders if the aural hallucination stage of sleep deprivation has begun. But she's still there, as though waiting for an answer. "If you really don't mind," he said cautiously, unsure of his own motives for accepting.

Of course, maybe he had hallucinated the question and now would be met with confusion.