"Fen...please, don't."
Fray was kneeling on the cobblestones, held down by chains. She'd been imprisoned this way long enough for the ache in her knees to grow unbearable and her shivering from the evening chill ever more violent. Metal rattled with each convulsion. But still, she pleaded. He was her twin, her eternal other half. Surely, he would listen. Would see the horrible error of what he was about to do.
"I have to," he murmured, brow lined in concentration. "There is no other way."
She shouted in frustration, her anguish reverberating across cold, unfeeling stones. "That's fucking bullshit and you know it. And for what? For someone who won't even love you? You would abandon our entire family, abandon me, for one stupid, ungrateful bitch?!"
She was furious now, and desperate. Time was draining away faster than it had any right to. She knew in her bones that her brother wasn't going to change his mind. He wasn't the type, had never been. Stubborn to an absolute fault as their mother always said. But the thing he was about to do was too terrible to even contemplate, and she would have happily, gleefully even, given up every one of her limbs if it meant he would change course.
Fen turned to her then. She'd never seen him sadder, his eyes wet and every line of his body hanging heavy with despair. "Maybe..." he sighed, kneeling to caress her tear stained face one last time, "maybe one day, you will understand why. Though, truly sister, I sincerely hope you don't."
He straightened to full height and backed away. Fray howled as she raged against the chains, muscles screaming in protest.
"I'm sorry, Fray. I love you, forever and always."
"No!"
And then he tipped the bright green liquid into his mouth, downing it all in one go.
Fray went limp and watched in helpless horror as her brother collapsed onto the ground. He was choking, twitching. She wept, babbling no no no as she tried one more time to break free, pulling on the manacles around her wrists and ankles until her skin turned bloody. Eventually, he stopped groaning, but then his bones started to expand. At some point, Fray threw up. But still his bones were moving, multiplying, until some tore through his lovely brown skin. New flesh crawled up and out, sliding over the bones of a monster. It looked more bark than flesh, but it rippled unlike any bark she'd ever seen.
After what felt like an eternity, the thing that stood before her completely and utterly broke Fray's heart. Her brother was gone, replaced by a creature of unimaginable ugliness, all lumpen planes and misshaped angles. His once smooth expressions, with his aquiline nose and long, elegant hands, gone. Now, standing before her, was the stuff of nightmares.
"F-FFrrraayy..." it moaned somehow. Fray shuddered and felt more bile rising to her throat. It tried to shuffle closer, almost apologetic in its movement.
"Stay back!" she wailed, her voice going hoarse from so much screaming. "Stay the fuck away from me! I hate you! I fucking hate you and I will never, ever forgive you! You fucking traitor, you monster!"
The creature seemed to recoil at her words, as if burned. It froze for a moment, then moved slowly backwards, until it reached the workbench Fen had been toiling away at only a few moments ago. Turning, it scanned the contents of the bench. It took so, so long, as if struggling to decide. Finally, it reached out, picking up a tube filled with glowing, orange liquid. It emitted some kind of strange creaking sound, and then it tilted the liquid down its throat in grotesque mimicry of its former, human self.
For a moment, nothing happened. Fray's hands were so slick with blood she could almost, just barely feel one of them begin to slip out.
And then the thing that was once her brother exploded. Not into pieces, but into more, so much more. More bone, more bark, more everything. It was growing and growing at an astronomical rate, threatening to fill the whole room with no signs of slowing down even once it did. It was going to bring the whole house down. It was going to kill her.
With a crazed fury, Fray yelled one more time and pulled. One of her thumbs broke, and quite possibly so did one of her ankles. But her hands came free and soon after her legs, too, the screws of the lower manacles loose enough to have been ripped from the floor. The monster before her was shrieking with what sounded like a hundred voices as it bubbled outward in a nonsensical assortment of flesh and limbs. It was also dragging itself toward her, animal in its urgency. One of the limbs, sharp as a knife, reached for her but cut her instead, drawing blood, while another simply pierced her in the shoulder.
Fray cried out and yanked herself free, watching the thorn like object withdraw from her, dripping in blood. And then she ran.
Or, more accurately, she limped. She hopped. At some parts, she even crawled. A fierce, burning desire to live drew her up each time she fell and onward she would go. She didn't even know where she was going, half blinded by tears and pain and bloodloss as she was. All she knew was that she could not stop, for sounds of destruction followed in her wake.
Dusk slowly turned to a very faint, pinkish promise of dawn. She was hobbling at this point, wheezing from exhaustion. Her vision faded in and out, and there was a very strange, numbing sensation that traveled from her shoulder all the way down to her leg. She wasn't going to make it. That much was certain. She was going to die here, where ever here was, while the monster her brother created raged on. She was sure it would kill people. It might even kill everyone. And she would be the first to die.
She stumbled and tripped on something gnarled, falling face first into dirt. And then she rose no more.