“Aelin had felt it before: a thread in the world, a current running between her and someone else. She’d felt it one night, years ago, and had given a young healer the money to get the hell out of the continent. She’d felt the tug—and had decided to tug back. Here it was again, that tug—toward Manon, whose arms buckled as she collapsed to the stone.”
-pg 483 Queen of Shadows
Further evidence that Aelin, Manon, and Yrene are going to be the focal points of this war. Three powerful women in their own right who have overcome countless obstacles and have each crossed paths along the way. They have a string tugging them together and TOG7 will be the climax of their story.
I would bet anything that all three of them will be controlling some part of the forging of the lock, whatever that might entail. Perhaps each of them must put one piece of Wyrdstone back in the gate.
No matter what, Manon, Yrene, and Aelin are going to be the ones to finish this war.