[If, before all of this ends, your father and brother change, then we will immediately give up our plan. What the Istarin Empire ultimately hopes to achieve is peace. We do not want war, nor do we promote war.]
After reading the last part, Soraya felt complicated. The chances of her brother and father changing are next to zero. If they did change, she would be the first one to stand with them.
After all, blood is thicker than water. Even though she has been treated horribly by her father and brother, if there was a choice, she wouldn't want to see them dead. Soraya had zero interest in joining hands with the Istarin Emperor to overthrow the current Emperor and the Crown Prince to become the first and only Empress or Female Monarch of the Dune Sovereignty.
As long as her family members changed and gave up on this toxic ambition of theirs, she would help them in any way possible.