Wait time is 2-4 weeks
From Mirabilia.com:
In the garden at dusk is where you find the “Lady of the Mist”. She is usually surrounded by many petaled mossy roses. The petals are crushed beneath her feet and their heavy scent is thick in the air. The crickets sweet symphony accompanies the sound of her rustling satin gown. You can see her when the blue moonlight reflects across her pale skin. Why she chooses to linger in such a place is a beautiful mystery.