I never got the issue about that line. Lando tells her “only two were made.” Rey doesn’t realize the other is in the ship she was in. Realizing that a second one is with her prompts her to recall Lando’s words.
Not poetry, but it’s fine.
I cut it out because it feels like clunky exposition during an emotional scene. We don’t need to hear her make the connection to what Lando said (in fact, I’ve considered cutting Lando’s line as well). She should be able to figure out by herself that Kylo must have had one.