If you read the dialogues, you will see that the reason Brianna is "the last of the handmaidens" is because she was born from their mutual father's second partner, a Jedi named Kae.
The thread was about twenty pages long, and it was quite evident that the evidence was there, and in fact it was more likely as not that this was the case, but that it was never fully scripted into the game (whether for lack of time or plot re-negotiation was obviously up for debate).
Forna K. Shan's thread (<{POST_SNAPBACK}>) on 10 March.
The Search function is your friend. I have included the first post of the thread, below.
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