By the third day, the healers had stopped calling it resistance and started calling it what it actually was: a stalemate.
"We can hold it," Wren told her, in the small stone room off the healing hall where KaSandra had not slept so much as stopped moving for a handful of hours at a time. "We've been holding it since the first day. It isn't spreading further. But it isn't retreating either, and I want to be honest with you about what that means, because I think you've earned honesty more than you've earned comfort."
"Say it."
"Holding isn't healing," Wren said. "We can keep him exactly where he is — not dying, not recovering — for a long time. Longer than either of us would like to think about. But a stalemate isn't a victory, KaSandra. Sooner or later, something has to move."
KaSandra looked through the doorway at Thomas, still on the stone table, the gold-white light circling him now in a slow constant orbit that three healers took shifts maintaining because no single one of them could sustain it alone. He looked peaceful. That was the cruelest part of it — he looked, lying there, like a man simply asleep, and KaSandra had to remind herself, every time she looked at him, that peaceful was not the same as safe.
"Then tell me what has to move," she said.
Wren was quiet for a moment, the particular quiet of someone deciding how directly to deliver something she suspected would not be well received.
"You do," she said.
KaSandra turned to look at her fully.
"The poison is built around our methods," Wren said. "Around the specific architecture of coven healing, the exact patterns Patricia's early work would have taught someone to counter. Which means the only healing that has any chance of reaching past it isn't ours. It's yours. The cosmic thread you've spent your entire life refusing to touch except when the house downstairs left you no other choice."
"You know why I refuse to touch it."
"I do," Wren said. "Better than almost anyone alive, because I was here the last time you touched it, and I watched what it cost you, and I have never once asked you to touch it again because I did not believe any single life was worth what it took out of you that day." Her voice softened, but did not waver. "I am asking you now. Because it is no longer one life on one side of the scale and your comfort on the other. It's Thomas's life against the thing you've spent years telling yourself you're not strong enough to survive using twice."
KaSandra said nothing.
"You are strong enough," Wren said. "I have always believed that. I think you're the one person in this coven who has never believed it about herself."
They took her to the inner chamber that evening — a room KaSandra had not entered in years, round and open to the sky through an aperture cut directly into the mountain's peak, the cold air pouring down through it undiluted by anything the coven's usual warmth could touch. The stars above the aperture were wrong in the specific way KaSandra remembered them being wrong, too many, too close, arranged in patterns that belonged to some other sky than the one the rest of the world slept under.
Patricia's — her sister's, though KaSandra had stopped letting herself finish that thought most days — mother had built this chamber, generations before either of them were born, for exactly this purpose. For the cosmic thread. For the power that ran under everything else the coven taught, older and stranger and far more dangerous than the gold-white healing light Wren's healers used every day without incident.
The coven's eldest — a woman named Sister Perpetua, ancient in a way that made even Wren seem young, sat at the chamber's center on a cushion worn thin by centuries of exactly this posture, and looked at KaSandra with eyes that had seen, KaSandra understood, everything the mountain had ever witnessed and had never once needed to raise her voice about any of it.
"You've come back to the room you swore you'd never enter again," Sister Perpetua said. Not a question. An observation, delivered the way the mountain delivered everything, without judgment and without softness either.
"I don't have a choice."
"You always have a choice," Sister Perpetua said. "You simply, tonight, find the alternatives unbearable in a new configuration. That isn't the same as no choice. I want you to understand the difference before we begin, because the thread does not respond well to people who believe they've been forced into using it. It responds to intention. Clean intention. And I do not believe you have ever once, in your whole life, used it with clean intention."
"Then teach me," KaSandra said, and her voice cracked on the second word in a way it had not cracked since the garden. "Because I don't have time to learn slowly. He doesn't have time."
Sister Perpetua studied her for a long moment.
"The thread has never been about power," she said, finally. "That is the mistake every person who has ever touched it makes, including you, including the version of yourself that stood in this room years ago and used it out of grief and fury and nearly burned herself hollow doing it. It is not power. It is honesty, applied at a scale most people are never asked to apply honesty at. You cannot use it to fix a thing you refuse to look at directly. It simply will not move for you, no matter how badly you need it to."
"Then what do I need to look at."
"You already know," Sister Perpetua said. "You've known since the day your grandmother died protecting you from an assassin's first attempt on your family, and you have spent every year since building a very careful architecture around not looking at it. I am not asking you to dismantle that architecture tonight for its own sake. I am telling you that the thread will not move through a person who is still holding a door shut against the thing it needs to pass through, and the door you are holding shut, KaSandra Lucas, has a name, and I think you know it better than anyone alive."
The wind moved through the aperture above them, cold and clean and full of stars that belonged to some sky older than the one over the house full of chosen ones far below.
"Hatred," KaSandra said, quietly. "You want me to let go of the hatred."
"I want you to look at it," Sister Perpetua said. "Whether you let go of it afterward is a question the thread will answer for you far better than I ever could. But you cannot ask it to move through a door you refuse to open, and the man on that table does not have the years it would take you to open it slowly."
KaSandra closed her eyes.
Somewhere below the mountain, in a stone hall filled with gold-white light, Thomas breathed slow and even and unaware, and somewhere further below that, in a house full of people waiting well because waiting well was the only thing left they could offer, Katherine and Tierney and all the rest of them held on to a promise KaSandra had made in a kitchen doorway before she'd stepped into the dark.
Bring him home.
"Show me the door," KaSandra said. "I'll open it myself."
Sister Perpetua did not move.
"It isn't a door I can show you," she said. "That was never how the thread worked, and I think some part of you already knew that before you asked. It isn't outside you, waiting to be pointed at. It's the door you've been standing in front of every day for years, the one you walk around instead of through, the one you've gotten so practiced at not-seeing that you've nearly convinced yourself it was never there at all."
"Then how do I begin."
"You already have," Sister Perpetua said. "The moment you said her name to yourself instead of around it. Hatred isn't shy, KaSandra. It doesn't hide the way grief hides. It's simply loud in a register most people have trained themselves not to listen for, because listening for it means admitting it's been shouting the entire time."
The old woman rose, slow and unhurried, and crossed the chamber to where KaSandra stood beneath the aperture's cold open sky.
"Sit," she said. "Not because sitting is required. Because a person who is about to be honest with themselves for the first time in years should not also be standing, in case the honesty costs them their footing."
KaSandra sat.
For a moment neither of them spoke. KaSandra looked up at the aperture, at the wrong bright stars arranged in patterns that belonged to no sky she had slept under in years, and thought — unbidden, the way thoughts arrived in this chamber whether invited or not — of the first time she had sat exactly here, younger, angrier, certain that the thread's fury was the only honest thing left in her. She had been wrong about that, she understood now, sitting in the same cold spot with three additional years of failing to say a name out loud pressing down on her. Fury had been the easy honesty. It had cost her nothing to be furious at witch hunters, at a war she had not started, at a world that had taken so much from a coven that had asked only to be left alone in its mountain. What the chamber was asking of her tonight was a harder honesty than that, the kind that pointed inward instead of outward, and she understood why she had spent years avoiding this room specifically, when every other danger in her life she had walked toward without hesitation.
"I know what you're going to ask me to look at," she said, quietly, before Sister Perpetua could speak again. "I've known since Wren said the word 'yours' in that doorway. I've simply been hoping, the way I hope about very few things anymore, that I was wrong."
"You are rarely wrong," Sister Perpetua said. "I imagine that is part of why this has taken you so long."
The stone was cold under her, the same cold that poured down through the aperture from stars that belonged to no sky she'd slept under in years, and she felt Sister Perpetua's hand settle light and dry against the crown of her head, an old gesture, older than either of their lives, the specific weight of someone who had done this for hundreds of frightened, furious, grieving people before her and would do it for hundreds more after.
"Begin where it's loudest," Sister Perpetua said. "Not where it's easiest. Loudest."
KaSandra closed her eyes.
She had expected — insofar as she had let herself expect anything, walking into this chamber for the second time in a life she had spent trying to make sure there would never be a second time — that the thread would arrive the way it had arrived years ago, violent and total, a flood she would either survive or not survive with very little say in which. It did not arrive that way. It arrived instead the way the coldest truths always arrived, quietly, from a direction she had spent years teaching herself not to look toward, and underneath the mountain's ancient stone and the wrong bright stars and the old woman's steady unjudging hand, KaSandra Lucas finally, for the first time in longer than she could account for, let herself hear exactly how loud it had been shouting the whole time.