Im not sure why no ones brought this up yet.. but im super new and i figured out pretty fast, that if you just lure her to the healing spirits and let HER walk through them, it does a TON of damage. just bait her and if she hurt you too much, grab the healing spirit youyrself and bait her to the next one. took me a few tries but you literally dont even have to attack her. just keep running around the stairs to stay away from her attacks as much as you can. Make sure you have a breakout ability too. for her force slam attack.. helps alot. i hope this helps you!