Sarah J. Maas has said before that she does not repeat names by accident — she keeps a notebook specifically to the purpose to checking and avoid non-intentional repetition (as she said in an old interview). 
**If a name repeats, it’s intentional.**


Just like we have Thanatos both as a Lord of the Hewn City (ACOTAR) and as a Prince of Hel (CC), **we also have two black-haired women named Briar — one in ACOTAR and one in TOG.**

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>🧵 **The TOG Connection: The Thirteen**

I think the TOG crossover will happen through the Thirteen — and by extension, Dorian and Manon.
That’s why SJM left Manon and Dorian story purposefully open in Kingdom of Ash ending.

I don’t think the Thirteen died.
I believe they were saved by the Mother for their sacrifice — similar to how the Mother helped Nesta save Feyre and let her keep some of the Cauldron’s stolen power as a reward — and unknowingly world-walked into the ACOTAR world during the power explosion.

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>☀️ **The Yielding Clue — A Color That Shouldn’t Exist**

*When Ironteeth witches yield, it’s supposed to be **darkness**.*

Quotes from TOG:

>“As the Ironteeth witch yields life to the Darkness, its power fills her, and unleashes from her in an ebony wave.”

**But when the Thirteen yielded in Kingdom of Ash, it was the opposite:**

>“And it was not darkness, but light. Light, bright and pure as the sun on snow, that erupted from Asterin… As the Thirteen… made the Yielding as well.”

This is a massive anomaly — their yielding acted nothing like Ironteeth magic.

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>🌠 **Why the Light Matters**

Bright, pure white light is heavily associated in the Maasverse with Bryce Quinlan’s Starborn power — *the same magic that allows her to world-walk.*

If the Thirteen’s Yielding manifested as light instead of darkness, it could mean:
	>•	**They were channeling a magic outside their native system.**
	>•	**The magic they tapped could have punched a hole between worlds — sending them to Prythian instead of the “Underworld”/World of the Dead.**

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>🕵️‍♀️ **Briar the Spy**

One of the Thirteen, Briar, has platinum hair but dyes it black to work as Manon’s designated spy.

From TOG series

>“Briar was youthful and beautiful… she and Edda dyed **their hair black** after learning that white hair can stand out in the darkness… Her eyes were blue, unlike most Blackbeaks.”

In ACOWAR, when Feyre and Azriel rescue Elain from the Hybern camp, they find a black-haired “human” girl named Briar:

>“Briar, she said, her voice raw from screaming. Her name was Briar.” 
>“Watching us with wide eyes, **black hair whipping over her face.”**

Later, Feyre sees her again:

>“The human girl—Briar—was with them. Now tucked beneath Viviane’s arm… smiling timidly at the Winter Court ladies.”

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**🧩 >My Theory**

I think this ACOTAR Briar is the same Briar from TOG.
This human Briar is supposedly a Child of the Blessed — which is the perfect spy cover: harmless human, always wandering throughout Prythian, with an excuse to be near High Fae gathering information since they are human who “worship the fae and want to be near them and serve them anyway they can”.

And when Feyre sees her smiling with “other Winter Court ladies,” those could be the rest of the Thirteen.

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**🔮 >The Bigger Picture**

**If I’m right, the Thirteen’s light-based Yielding opened a path to Prythian — unintentionally bringing them into ACOTAR (and setting all the major players focused in world-walking and inside Prythian).** **This sets the stage for:**
	>•	A TOG–ACOTAR connection without undoing TOG’s ending.
	>•	Closure for Manorian: not only it would explain why their “HEA” felt uncomplete and open ended *and* bring the focus to someone else besides Aelin to make the crossover happen. 
	>•	A magic system link via light/worldwalking powers that ties directly into the Crescent City arc.

🌌(TOTG Theory) The Thirteen are the Key to the TOG → Crossover