The latter seems a likely story. I cannot imagine betraying my family or Simurgh for any reason, nor can I imagine Cinna or Zuya doing such a thing. It seems more likely to me that...what happened was not a betrayal, but a conflict of interests? A disagreement about how to achieve a shared goal? I could see that happening, with Zuya and myself. Family is a bond that is not easily severed, after all, even when a thing like "country" might seem more abstract.