Down to dodge, arrows to move and jump. Space to attack (and proceed text), and z to fire a small, pointless projectile. This is EXTREMELY difficult, like, even sorta unfair. Corona fight? Throw it in the garbage! The boss's movement is sorta Elden-Ring inspired. Tip: Hit fast, dodge faster. Press 9 after the healthbar fills to allow her access to her phase 2 attacks from the start! AKA, Hard Mode!
I'm so sorry for any lost sanity, yes, she does combo you, yes, some attacks require crazy fast reactions, but keep at it and you'll get em eventually! (the yes/no option is click btw)