What about young Ben Solo and Snoke? She saw them down the hallway in the novelization.
Passage?
This is taken from the novel written by Alan Dean Foster.
A heavy, slow, mechanical breathing filled the room. Turning, she found herself looking down an impressive hallway, its architecture reminiscent of the Old Empire. Peering harder, farther, she saw in the distance a section of the famed Cloud City. Two figures were locked in combat, distant, distant. Someone, somewhere, somewhen, spoke her name.
“Hello?” Wreathed in the irrationality of the moment, she called hopefully, but received no answer.
A boy appeared at the end of the hallway. She started toward him, and the world turned inside out, causing her to trip and fall.