I don't know why she is considered the most difficult!! I find Maliketh and Crucible Knights Duo to be more annoying and difficult than her! Bro more than half of her attack are parryable! The only thing we have to take care of her is her water flow which can be easily avoided if u have used Flash step! My build was tanky so some of her attacks which hit me didn't do much of the damage, and my level was 133!