If you run an assaulter heavy team formation she is pretty good. She gives 25% attack and speed to your assaulters plus a shield which is nice. If you can get her going first you can knock out t1 enemy characters as long as they don't have a fury deduction resistance and even if some keep their t1, the 25% speed buff combined with her enemy speed reduction halo of -12% speed can get you going before the enemy sometimes as well. She can also lower enemy physical defense when hit (50% affliction on entire enemy team) so that can be a bonus as well granted your team can survive to utilize it