That is one of the options, yes. Others that I have considered include a particularly vivid afterlife or a fevered dying hallucination.

*But she quiets at Rose's question, her eyes flicking back and forth from the girl's hand to her face and back. Her cheeks tinge - an unusual red, rather than their normal jade flush.* Ah... if you would like, though I assure you I am very much human and not at all a troll right now.