Despair and apathy is of the dark side. Plus she attacked Mace Windu. And she led a group that committed war crimes. Perhaps George and TCW will give us the real fate of Depa Billaba, it is his character after all.
I would love it if they published a novel about the Battle of Milvayne. Bel Iblis really is a great character. I think everyone likes him. Actually, I do not want him to die fighting. Just let him pass away behind the scenes (just as Ackbar did).