On the new content in regards to what happened between Anak and Xestris the WHOLE thing seems like a set-up to me.
Anak has never come across as the nicest man in the universe, but he's always had a purpose in what he did. But what was his purpose in forcing Xestris to preform in the orgy against her will? Unless the purpose itself was to create sympathy for her from Nalili.
And how convenient that Anak's heavily defended fortification had the door unlocked so Nalili could walk in just as Anak was telling Xestris she was 'nothing to him.'
More details, who else had the power to let those choosen in? It's not a long list and Anak is on it. And the biggest thing is just the logic behind leaving Xestris. I mean care about her or not, she's been by his side for 100 YEARS! And has intimate knowledge on him and his tower defenses. If anyone else captured her she'd be the keys to the kingdom.
But there is one thing I'm not sure of. Whether Xestris is in on this plan or not.
If she's in on it, her role seems clear. She's spying in on our group and will report back to Anak.
However more interesting will be if she truly had no idea this would happen. If that is the case....then perhaps Anak sent her away for her own safety. Anak knows something big is coming, but perhaps he has some sort of suicidal plan. and instead of having Xestris die along side of him, he took on the role of 'uncaring Master' and sent her to Simon to survive.