You know you gotta fight her 3 times right? Better get your weight up… the first time is the hardest though … fought her at the arena.. then sacred river and then flying arena
anytime u fight her outside of her hut, she's much easier.
She's only tough to beat bc she's bulky as fukk
what i did was parry regularly until she gets angry. before the "angry" phase, she only has 3 different attack patterns.
When she does get angry, dodge the regular attacks and only parry the gradient attack she does.
If you're using Maelle, between Phantom Strike and the gradient parry, you will get enough to get LV3 gradient attacks. Use Gommage and she dies eventually