Illusion [Bonus chapter]
Alwin revealed that even the Safiro tribe was also under a spell which was why they were so obedient even when they were already suffering so much and a lot of their tribesmen had died.
It was true that they couldn't do anything with their lack of money, food, and other resources. But, since all of them are warriors, rather than continue to suffer in silence, they could have staged a revolt for a few days to catch the attention of other officials such as Duke Arno.
But they didn't because they were put under a spell to just obey what Dempsey demanded even if it was unreasonable.
However, with the protection of Esmeralda, and as their suffering got worse; Nadia and her siblings realized their situation was grim and tried to do something about it.
The magician was not able to completely control them nor clear their memories the way he did to Dempsey's men because Esmeralda was still trying to protect the Safiro tribe.