I'm finally giving Terraria a go, and am quite enjoying it.
I recently killed the Eye of Cthulu, and got the notification that the Dryad has entered the world.
Now, I had housing already available for her (I went with a tall apartment style building for NPCs), and the lower levels are already populated. However, its been probably at least a few days of playing and she still hasn't settled in a room.
Thinking the room was too high, I built another one on the ground level to the necessary specifications, as I understand them, however she still has not appeared.
Is there any special necessity for the Dryad to settle in?