Here’s a cool passage that takes place right after Kylo and Rey’s first mind link. I didn’t really change much, I just made the wording more clearly allude to the dyad and I even replaced the word “ghost” with “phantom” in reference to Vader as a subtle hint for what’s to come.
She was still shaken by the manifestation of Kylo Ren. In a place she had come to think of as at least a beautiful sanctuary, seeing him had been an unpleasant surprise, to say the least.
After he’d immobilized her on Takodana, Kylo had taken her to Starkiller Base, to pry her memory of the map to this ancient place out of her head. He had probed her thoughts, sifting and sorting, and seen so much that she would have kept from him - him and anybody else, for that matter.
Her desperate certainty that her abandonment on Jakku had been a mistake, or a grim necessity that would be put right by her lost family, if only she waited long enough and patiently enough. Her terror and despair that she was deluding herself, and would spend her days in isolation because she wasn’t good enough, and end up as anonymous bones in the sand. Her dreams of an island amid a trackless ocean - the very island on which she now found herself.
Kylo had rummaged through these hopes and fears, things he had no right to. But as he searched, something had formed, or perhaps merely made itself known. Even as he cruelly scoured her mind, his own had mysteriously revealed itself to her. She felt his rage, like a ruinous storm that filled his head, his lust to dominate all others, and his desire to humiliate those that had wronged him. But she also felt his hurt, and his own feelings of abandonment. And his fear - that he would never prove as strong as Darth Vader, the phantom who haunted his dreams.
Kylo had retreated at finding Rey in his head - had practically fled from her. But that had not been the end of that strange, seemingly sudden connection. She began to see more - far more. Somehow, almost instinctively, she knew how he accessed some of the powers at his command - even though she didn’t understand them. It was as if his mind had become intertwined with hers, unlocking and flinging open the doors to his knowledge and training.
But now Rey couldn’t shut those doors, and she feared what else had been set loose upon her.