Ben looked at Rey. His Rey. His equal, his light in the dismal life he had since he joined Snoke. His heart sank, slowly, until he couldn't feel it anymore.
Her warm brown eyes, always filled with charm and happiness, like caramel. Her eyes were gone. In their place were the sickly yellow ones her grandfather had given her. They looked so artificial on her face. Ben had to muster all his courage to keep from sobbing.
"No. You didn't."
Rey lifted her chin. "I did. There was no one to stop me. I didn't intend there to be."
He felt the Force constrict around his body, slithering around him as though it was a snake. Because it was who Rey was now, it was only fitting.
A snake. A murderous snake.
Ben dropped to his knees. No. His Rey of light. He could have prevented this. He regrets all of his previous attempts to turn her. To sculpt her into something she wasn't.
Rey rose from the throne. She walked down the steps, and Ben could see Palpatine's essence above her. His gnarled hands were caressing her face above her, running them through her hair. For a moment, he seemed caring, like a grandfather.
But then he lifted his hand. They were caked with blood. Her blood. His blood. His family's line.
And he saw the strings attached to her arms. And her legs. And he saw the emperor, with all the Sith over his shoulders, controlling her.
The Rey he knew and loved was being controlled, like a marionette. The Sith were feeding her vicious desires, making her a feral beast. Injecting a poison into her soul that would rot the light away from her and give way for the beast to live.
Ben could her the Sith laughing as they engineered Rey.
Give her a cloak! A black one!
Make her bloodthirsty. She can never be satisfied!
Give her fangs!
Make her feel pain. Scar her!
The Jedi are dead! The Sith are reborn!
Yes! Give her a saber. One as unstable and broken as she is!
Give her strength, power. And a hunger for more!
Her precious Resistance is dead, Palpatine. Her body is ours, OURS!
Palpatine laughed. Rey laughed, too, an infernal sound, that didn't feel like her at all. It was perfectly pitched to that of her grandfather.
Yes, friends. She is ours. She is MINE.
Rey walked over to Bend and placed a hand in his throat. Wisps of lighting crackled on her hands. She ran that hand along his face. Just the light touch burned and reopened the scar on his face. It hurt, like a thousand tiny swords were ripping away his skin. He roared in agony. Rey only laughed.
Her face crept to his, she brushed his lips with hers, and whispered " Die, JEDI." She said the last word like acid was on her tongue.
She drew her saber, and plunged it into his chest.
The last things Ben saw was Rey smiling, his blood on her face, as her tounge slipped out to drink it. Palpatine's laughter echoed in his ears.
Blood of my blood. Granddaughter, the galaxy is yours.
You are mine.