In the early leaks she said that she sensed the birth of her son and so she wanted to give up the jedi path because of that (which follows logically) and goes hand in hand with the EU. In this version its pretty contrived and convoluted since Ben does die and even worse he was a student of the darkside, so her leaving the jedi path because of sensing his death is self defeating and just doesn’t make a lot of sense.
Does anyone else remember the really early leaks that said that the Leia and Luke flashback would be the first scene in the movie?
Edit:
This would explain why the BTS footage showed them filming an extended duel.