... and then, one night, it's simply
there-- when it was least expected and she was half-asleep, hands stretched out across the table and glass empty.
The door is not dramatic. It doesn't even have light around the edges as a proper door should-- it's just there, silent and cold, with a threshold big enough to squeeze through.
Melpomene puts her coat on, silently, and wraps the scarf around her neck. She leaves a note--
-- and then she's gone, really gone, one foot through the doorway and
not looking back.