She has just invaded the mind of Kylo, and he knows how to get information from people. Perhaps if we heard his voice when she’s thinking about what to do: ‘I can take whatever I want’.

Also, I’ve been thinking about how to repurpose Kylo viewing the Starkiller beam, and the interrogation scene may be a good place. Since it’s only canon to show the personal visions of the main character, Rey would have to be the one viewing them. So to do this, Kylo’s prayer before the interrogation could cut right after ‘I will let nothing stand in our way’. Then, as the tables turn and Rey gains the upper hand in the interrogation, she sees the Starkiller shots and the Vader mask overlaid with the missing ‘grandfather’ dialogue. This would serve as a revelation to both Rey and the audience at the same time, which can only be a good thing for the story.