When Ben is a child, Leia frequently has force-visions giving her glimpses of his possible future. By the time he is a few hours old, she knows he is very likely to fall to the dark side and kill many, many people, and as he grows she continues to have these horrifying visions.

Would love to see:
+ Leia doing everything she can to instill her son with values of humility and self-control and watching as he disregards said values
+ Leia feeling torn between her love for / responsibility towards her son and her duty to the all the people she has dedicated her life to protecting from the dark side
+ Just... ...lots of emotional and moral agony