Do you even need the line at all? Luke already tells us it’s the last night of Leia’s training, and omitting any further elaboration on that lets you headcanon that she’s just moving into politics, or is just finished with whatever Luke had to teach her, or something. The idea of Leia saying something along the lines of “I have sensed the end of my Jedi path!” is hilarious to me - then again, she apparently also took the time to prophesise that her lightsaber would be picked up again by someone else, so Luke should hide it in his hut…

“Luke! I’ve sensed that my son is going to die if I continue training. This is the end of my Jedi Path.”
“Wow, that sucks, but fair enough.”
“Ah, but someone will pick my saber up again, and finish my journey.”
“I see. Wouldn’t that also lead to your son dying?”