A/N: I know this used to be marked as unfinished, but lbr I'm never going to get around to finishing it and it reads fine as it is, so it's just gonna stay as it is. Enjoy
She walked away from him. She ordered him to take the helm, and then she walked away.
She was aware of her mind screaming at her to stop, to turn around, to launch herself into his arms and tell him everything she had never admitted even to herself, but she couldn't. She sat down in her chair, once so comforting and familiar, now cold and impersonal. She shut away that part of her mind that allowed her to feel and set about attending to the Starfleet red tape that was now required from her. But even composing what was arguably the strangest report of her career could not keep her from being very aware of him sitting a mere few metres in front of her.
A relief helmsman came to take Tom's usual station and Chakotay stood up to return to his seat beside her. But he did not sit down and lean over to whisper a congratulations or encouragement as she expected. He was intercepted by Seven of Nine, who wrapped her arms about his neck affectionately and leaned forward to murmur into his ear, before capturing his lips in a long, passionate kiss.
Kathryn couldn't tear her eyes away. The moment of truth had come, and she found she wasn't ready for it. Until now she had been able to deny what the Admiral had told her and forget about it, but witnessing the display before her now, she felt her soul being sucked out of her and the life draining from her body. She realized then that no matter how much she had tried to deny it to herself and to everyone else, she had already given him her heart. And now it had been crushed and destroyed by the ex-Borg that she had liberated and mentored. The scorpion had come back to sting her.
She realized suddenly that Seven was staring at her, while still kissing Chakotay deeply. It was a look of triumph, like the cat that had gotten the cream. Seven had gotten exactly what she wanted and wanted Kathryn to know it. With a sudden rage, Kathryn leapt up out of her chair, intending to march over and tear the two apart. But before she could take a step, the assimilation tubules shot out of Seven's hand straight into Chakotay's neck. He groaned in pain before collapsing to the floor, unconscious. His skin began to ripple as Borg implants started sprouting out all over his face.
"You may have gotten your crew home, Captain," Seven spat at Kathryn's horrified face, "but you have abandoned me. My home is not on Earth, and now I will no longer have a home on Voyager. You have betrayed me and your crew. The former Maquis will likely be incarcerated at best, including your precious Chakotay. Tom and B'Elanna's baby will grow up with her parents in prison, and Icheb and I will be abducted and mutilated by Starfleet Intelligence, all in the name of science. Most of your command decisions are questionable at best. Do you really think you will get away without facing punishment for them? And the rest of your crew, just following the orders of their beloved captain – what will happen to them? What have you condemned them to?
"You have betrayed us. You are not fit to call yourself our captain. You have taken away from our lives, so I am taking away from yours."
Kathryn opened her mouth, but no sound came out. She wanted to cry out "This is madness. You're insane! Stop this!" but she couldn't find her voice. Because she knew Seven was right. She turned in desperation to the rest of the Bridge crew for help, but all she found was the horrific sight of a hundred and fifty Borg drones, staring at her out of the eyes of Tuvok and Harry and Tom and B'Elanna and every crewmember that she knew and cared for. Even Naomi Wildman had shiny metallic implants and was glaring at her with a cold hatred she couldn't bear to see.
A sudden white-hot pain in the side of her neck caused her to scream out. Seven stepped away as Kathryn sank slowly to the floor of her Bridge, feeling nanoprobes rippling through her veins and bursting through her skin with a spurt of blood as implant after implant sprouted out in waves of pain. Through a haze of red she could see Chakotay lying on the floor in the centre of the Bridge, covered in implants and surrounded by a pool of his own blood. She didn't need to touch him to know he was already dead.
"You have betrayed us," Seven's words echoed through her mind, accompanied by the many voices of the Borg Collective. "You have betrayed us and you must pay the price."
Blood oozed out of every pore in her body as implants continued to emerge. The pain was unbearable and she felt consciousness slipping away from her. In a final wave of pain and terror, she gasped in enough breath for one last blood-curdling scream.