Darcy is a level 15 fish and drink vendor located in the Lakeshire Inn in the human-aligned zone of Redridge Mountains.
She starts the quest  A Free Lunch.
See List of Redridge Mountains NPCs
This section concerns content exclusive to Cataclysm.
In the upcoming expansion World of Warcraft: Cataclysm, Darcy marries Guard Parker. They have a little girl named Libby.