When you love somepony, you have to deal with everything which comes with them. Fleur is perfectly aware that she's effectively inherited Zephyr. She just doesn't understand why she isn't allowed to kill him.
Hundreds of years after the death of Twilight Sparkle, a brutal theocracy rules over ponies with an iron hoof. A young pegasus mare slowly learns the truth about her world, and the lies her faith is built on.
Yesterday, she was a sweet, somewhat old-fashioned exchange student trying to find her place in a strange culture. Today, Centorea Shianus is a new world's greatest terror.