Since we can make Luke say whatever we want… we could just change the whole dialogue for the scene entirely if it is seamless enough…
Luke: “There’s something my sister would want you to have.”
Rey: “Leia’s saber.”
Luke: “I started to train her, but Leia was reluctant to follow the Jedi Path. She knew she could better serve the galaxy and its people through diplomacy. She surrendered her saber to me and said that one day, it would be picked up again by someone who would finish her journey. A thousand generations live in you now. We’ll always be with you, but this is your fight.”
JEDIT: Plus by doing it in this kind of way, it gets rid of the whole “Leia sensed” thing that seems to cloud up her reasoning for why she quit the Jedi Path