some stuff for this fight, knocking her in the lava is clearly optimal (it does 40 damage) and you should try to keep her in the corner when she's close to staggering, taking damage for this is definitely worth it. You can spear her as she returns from the lava.
for the circle attack, you can spear her while she is doing the nails in the air and then nail as she lands, the spear positioning seems pretty lenient for this
starting the fight with a spear seems good, try to not overflow on silk, so spear her a lot.
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