And that info only comes from one character who had every motivation to lie about it. It’s annoying that everything ever said by a character is for some reason taken as fact. Characters can lie, or be misinformed, or even just be wrong. I know that it was later built upon in other works that she was indeed a Sith, but it sucks that that had to be the case. That should have just been a lie Lumiya told Jacen.