Rey doesn't move from her spot, and just remains seated where she can stew in her own thoughts as much as Maketh can. Guess they both need their space.

"Undine... said that they wouldn't have, given the past data and the nature of how they came into being. That giving our lives in exchange for theirs would have been impossible. I don't know whether she said that to make me agree with her, or if she knew, but... I want to believe her. My mother is-- was very smart."

She bites her lower lip, letting that past tense sink in.