A suggestion:
Yamani is actually Miranda's younger sister (it didn't say anything about Yamani's age in her profile), and Miranda was supposed to become the next queen.
Yamani and Miranda's parents were not very kind monarchs so most people didn't like them (including James, obviously). Miranda loved her parents anyway but wanted to become a better monarch in the future.
Miranda and Yamani never really got along, both being too self centered, and when their parents decides that Yamani is supposed to marry James all hell breaks loose since Miranda had a thing for James.
Yamani tells James that if he kills the king and queen and lets her take the throne he and Miranda can go and live happily ever after, but Miranda stops him, pleading for her parents' lives.
Since people are so unhappy about the king and queen Yamani manages to gather a bunch of rebels and preform a coup d'état. The king and queen are killed and the rebels come after Miranda who manages to escape from the castle. She is of course devastated over this and thinks that James was the one who killed her parents. Yamani quickly disposes of the rebels and takes the throne for herself.
What do you think guys, hate it or love it?
Btw, I made a bunch of assumptions about Yamani, sorry about that, ShadowVyper. Oh, and I still don't know how the duchess is involved in it xD
