>>65580296if you're not using a big weapon using your faster attacks like she mentioned, and really just learning movesets like you're supposed to
also helps having longer weapons that swing in wider arks too to catch them when they're darting around
using a shield like she is isn't a bad option really for any boss that isn't gargantuan. it deploys at basically the same speed a roll will, but guarantees you'll at least mitigate some damage from attacks instead of getting fucked from a mistimed roll. very good if you're not confident you can continue dodging everything