When i fought her i remember using 3 things
Aero - For alot less damage
Glide - To stay up from the tremors and her stomps.
Tinkerbell - I'm sorry LW but i used her and she saved me from healing so much and proved to be an asset.
If all else fails and you just can't seem to beat her, level up 5 more times or so and get some more attack up or health.
Hope it helps.
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