She seems to be good. Her Hateful smash seems pretty funny to use.
Edit : i was able to test her myself and paralysis is priceless. Very low chance to be applied, but when it does, the boss just cannot act for 15 seconds
Pair her with Tyr for a huge burst potential.
Or, as every other kamihime in the game, with Sol.
And if you manage to draw Ramiel aside that its jackpot.