Move off blooming flowers before they burst. The tracking white lilies can stun you and set up a teleporting red grab. Deal with the flowers before chasing Hua.
Use heavy attacks once she is staggered. Near the end of that opening, a first-charge Dread Axe hit can knock her down and extend it. Jagged Steel is usable, but bleed won’t work on her. Victory awards Scarlet Wraithblade.