It does seem like Rey and Kylo have a much larger reaction to Leia sensing/resolving what to do than they do when she actually does die. Kylo in particular when he stares off into space after collapsing, dejected; seems like he’s maybe just feeling that way because he himself is about to die.
Also the music repeats itself once, so I might see if there’s another cue to sub in that works.
Not sure the idea 100% works, but I’ll enjoy recreating the audio to the best of my ability when I get the chance to!