For this part I would use the words spoken to Rey by her friends as if she is remembering them. They would replace the voices of the long-dead Jedi, indicating that she is not relying on the strength of the Jedi spirits but on her own memories to guide her. Though the images of her friends wouldn’t actually appear, this is intended as a mirror of Ben’s redemption where the memory of his father allows him to turn back to the light.

When Palpatine tells Rey that he is ‘all the Sith’, Rey simply responds that she is a Jedi. She isn’t all of the Jedi; Luke wasn’t being literal when he said that a thousand generations lived in Rey. Rather, it is a metaphorical statement intended to instill in Rey the feeling that she carries on the traditions of those thousand generations of Jedi, and that is enough. She doesn’t need the ghosts of Luke, Anakin, Yoda, and Obi-wan to lend her Force power to overcome the Sith. In fact, their presence would defeat the purpose of her quest. In this conception, she must decide for herself who she is, whether it be a nobody, a Palpatine…or a Jedi with the spirit of a Skywalker. If she were truly able to hear and see the spirits of the Jedi, there would be no need for her to have faith in herself. But because they are absent, she is able to take her final steps as a Jedi and declare herself one once and for all.