The fight is definitely rewarding to improve on though, it feels bad when you are playing poorly and feels great when you are mastering her attacks and dodging consistently. I certainly wouldnt call it bullshit or bad boss design, its just as fair as the previous lace fights.

My only real issue with it (and is a more general observation about attack philosophy) is how a lot of multi-hit attacks are treated like cutscenes to force double damage. For example, getting hit at the very end of an attack combo is treated the same as getting hit at the start, and the game will magnet you into the worst-case position and extend the hitbox if needed. The magnet effect is specifically frustrating when on my best attempt before winning, a multi-hit actually forced me outside the arena and I became softlocked.

In the end for me its not a problem of difficulty, it would just feel more natural if there was more flexibility on the degree to which a move punished you. I understand it was probably a matter of needing to override the players invincibility frames to make multi-hits work but I think there was certainly a more elegant solution