Spurn is a meh skill since she should rarely be enemy-phasing with this build. You could give her DC+Spurn since she does have decent mixed bulk. You would probably want a new weapon like Bellringer or Carrot Cudgel instead tho.
For the build you have on her right now, flashing blade feels kinda wasted since RS goes to 1 cooldown after she hits the brashperation range by wrath. You can instead maybe switch out wrath for spiral and flashing for another PP seal so you have infinite ruptured skys.
With the amount of skills you have (and could get) its really easy to make a fun build. Experiment!
Also where are the dragonflowers extra stats are always apprecitiated