beta
People shouldn't be so hard on Sizan. While she's being a bit selfish, she is aware of that and the feeling is mutual from Fleta. She made a promise to not leave her side, but it also got to the point where she really loves her little sister.
As much as I wanted Fleta to go with the Duke, the latest chapter shows that even if she went with him, the darkness would still take over. It isn't as easy as just being away from those who harm her because the darkness was planted long before Sizan's intervention. It may fester more if Sizan allowed the Duke to take her at the time because then she'll see herself as abandoned by her sister.
I think she'll live in that kingdom in the future though. Just not now