Echoes of feet on stone floors, then a gentle knocking on a wooden door

"Kaida?"

"Professor Snape…please enter"

"I've brought the potion.  I've added bog-gleaner milk.  It should make the potion more palatable."

"Bog-gleaner milk?  Professor, it was really unnecessary; an ingredient so rare as this…it would be a pity to waste it on my palate."

"Non-sense.  Drink."

"Thank you"

I can smell the heavy metallic fragrance of the potion.  The normally watery, brown-coloured potion has thickened-coagulated, into a rich black liquor.  I drink in the pungent ebony elixir, deeply- practically drowning in its flavour.  It's been so long since I've tasted blood.  For years I've sustained myself on this potion-baring the taste of mud.  But tonight the bog-gleaner's milk has brought me closer to the sensual taste of blood then I have been in decades.  I drain the goblet of its contents and lick my lips, not wanting to waste a single drop-it will be another month before I feed again. 

"I'll take the goblet, now that you are done with it…"

"Thank you, Prof…."

"Severus"

"Right, Severus.  I appreciate the trouble you have gone to, to make my potion."

"No trouble at all.  It was my pleasure."

There's always an awkward silence about now.  Perhaps I should just smile.  Hunh.  Nothing.  No wait; a flicker of a smile.

"I won't waste anymore of your time, Kaida.  Good Night."

"Good Night, Severus."

Echoes of feet on stone floors, then the sound of a door being gingerly closed