Man, I do need to play the games again.
I'm sided with the non-spetacular theorics on this matter. The Jedi Atton tortured and killed, is probably some random one, not being Kae or anyone particularly famous of the lore. He holds something against Brianna, sure, but so does he with everyone else. And there's no particular hostility towards her that he doesn't apply to the rest of the galaxy.
Also, as for someone as unimportant as Bolook, since there's very little on him, and Vandar and Vrook were the only ones we know of to successfully evade Dantooine's bombardment, I believe him to be dead.