Beforehand, I'm perfectly aware that this is not true, and that Bo Katan was made to sell female action figurines. It's just for fun. So, Bo Katan is one of the handful of green-eyed red-haired females in the EU. (In fact, there are to the best of my knowledge, her, Mara Jade and the BH from Kotor 2...) She is also the sister of Duchess Satine-the woman that made Obi Wan betray his Jedi vows on chastity, apparently. Having intimal meetings with your beloved sister or brother is quite frowned socially, but happens awfully in fiction.... In addition to the usual stuff (such as Sidious gloating ''ah ah ah, I have my vengeance on you Obi-Wan, who in addition to thwarting my plan on a weekly basis during the Clone Wars destroyed my apprentice at Mustafar !'') it would also have a nice ''parallel'' with the so bright idea of Han and Leia to hame their kid Anakin ''like is grandpa''. Or explain nicely why Luke stop hearing Obi Wan Kenobi force visions as he meet Mara Jade.