There's way more to it, I just cheesed it and skipped all of phase 1 / most of phase 2.God I hate the design of that fight. She really just flies around invincible for like 5 minutes taking shots at you?
Phase 2 isnt horrible but Phase 1 has these random patterns of waves that one shot almost every build and with adds they can be incredibly unforgiving with such a small timing window to dodge properly.
I didnt give a fuck about the rewards / achievement, just wanted that bitch dead so I can say I did it, both legendaries were salvaged right after, garbage loot.