After Carrie Fisher's tragic and untimely death in December 2016, people started wondering what would happen to her Star Wars character, General "Don't Call Me Princess Anymore" Leia. Based on everything we know about the saga, and what people close to her have said, it's all but a given Leia dies with her actress.
According to Mashable, Leia was set to survive Last Jedi, and was going to have a big role in Episode IX. That's obviously no longer the case, but Jedi director Rian Johnson also said, "We don't adjust what happens to her in this movie." If both statements are to be believed, she'll survive, but perhaps die offscreen. But what if they're not true? What if Leia was set to die in Jedi anyway? It honestly makes sense for the character to die, especially if either Rey or Kylo Ren kills Luke. Why not take his sister out too, to really deal a death blow to the Resistance? But if they did that, and they filmed her death, how effected might audiences be actually seeing Leia die, with Fisher's death still so fresh and raw in their minds?
It's easy to imagine that Lucasfilm could resolve this issue by editing out her death scene (if it exists), and rewriting the script so she dies offscreen. Perhaps as Luke re-enters civilization, the first thing he sees is a memorial for his fallen sister? If anything's going to send him hurtling toward the Dark Side, it's that.