Truly an incredible piece of work(then again you are the Master of Barrisoka). I do not know why but I really love your take on the relationship of Barriss and Ahsoka(well more of a non-canon ship pairing).
Essentially the Ying to the other one's Yang. two sides of the same coin. Forever connected. Yearning for each other(Maybe for physically pleasure or emotional joy). Ahsoka might admire and love Barriss for her devotion, experience and wisdom beyond her years(Like a student admiring a teacher or maybe a Sempai relationship kind of thing). While Barriss may love Ahsoka for her free spirit and recklessness to the point of obsession. Ahsoka who while may be obedient she at the same time does the things she want at the time she desires.
That is something that's is(Well to me) fascinating, beautiful and sad.
And after watching The Wrong Jedi I feel that this might make their pairing stronger. For example while Barriss may have hold love(or lust) for Ahsoka she at the same time may have hold resentment and jealousy at Ahsoka for her free spirit and joy in her heart. And since Ahsoka felled to the dark side(thanks to the Son from the Mortis trilogy) she may have consider it as a form of betrayl.
Yet when Barriss fought against her in the factory maybe she felt remorse, pain and sadness with a hint of rage. Sadness that she was hurting her beloved friend while anger that she felled from the light she once held so dear. Maybe in the fight she was crying.(Then again that could be me.)
And since both felled to the dark side by "betraying" each other it's possible that they might develop some sort of obsession and addiction for each other. Maybe Barriss might become obsessed of Ahsoka(Maybe to seek forgiveness,to lick her wounds, for pleasure and or comfort) while Ahsoka might become the "dominant" one over her. And yet it's possible that in that darkness of pain, sadness, hate and despair those two may find hope, light and love within each other.
I just love interpreting those kind of things. Even if they aren't canon I find them fascinating. It really makes me feel warm and happy.