Be patient.
From Fallen London Wiki
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From: A dream about a return to the mirrored hall
It's all you can do.
Unlocked with 
Watchful 10, 
Having Recurring Dreams: Is Someone There? 11
Success
Time passes.
You have to wait a very long time before your reflection enters the room. You remain still while you wait. It occurs to you that once your reflection had to wait for you.
Nightmares is increasing… (+1 CP)
Having Recurring Dreams: Is Someone There? is increasing… (+3 CP)
Touched by Fingerwork is increasing… (+5 CP)
