I hadn’t considered it like that but you’re right: the rush is the logistics of the fleet taking off. My only concern is that this may not be clear until late in the film. There are a few times during the adventure when characters say “We don’t have time to X.”
And that’s an interesting read on the Leia death, with Rey feeling responsible for it. That makes sense! I’ll have to play with the scene, though, unless there’s a mock-up out there I may just not be remembering right now. If Rey stabbing Kylo is followed by Rey dropping headphones, there’d be a lot to cram in from Leia before seeing her give out altogether.