Honestly, Kate is not the best person to ask about any of this, saying as she was unfortunately locked out of the discussions regarding it and she shrugs. It's mostly a theory, really. People are shitheads, selfish and easily bought with the right words.

"Might not even be here any more." Which is also an option. That, if someone did betray them, they could be home scot free. "As for reasons - thought they were on the gods' side." Or didn't like the answers they got.