WOW! Sang Fantastic character! I love the purple, so I love all the colors she has for power!
Excellnt Also the description you mentioned , its great for a good Void heroine, since they always seem to be full of evil purposes and not in her case, I also think that the hair improved a lot , but it doesnt feel exactly as hair more like a ghost of hair, if that’s the goal looks good to me ! 
And if not, well then that’s the style you choose, and its also very respectable as well! I most say the concept sheet its my favourite since I really like to see her face, and with out legs, but the final design look really powerful and full of void magic! I wish nothing but the best in this war for your character I always like her since the beginning