Boy, it's Dark

Yes, here, the right wing is very dark. Perhaps the chandiliers should be cleaned to restore more of their brilliance? Anywise, the right wing holds choices. Towards one end, there is light, and this is to travel south. Going North down the wing, however, their are black, spiralling, blocked off staircases. However, one is unblocked. Plus, there is also your left, where there are a row of large, red doors. Where do you think Colleen is?

Go South, towards the light

Go North, towards the unblocked winding stair

Go left, towards the red doors

Go back to the Grand Staircase landing

Leave Colleen's Dog House

have searched for Colleen here.