Phase 1
-Spread out 8 yards on both sides of the boss, slowly move or rotate boss to get to clear floor space.
-move out of the Breath when she turns towards a random raid member
-tanks run Volatile Rot as far away from the rest of the raid as possible. Tank swap.
Phase 2
-spread out around the boss and don't get his by shit.
Bloodlust at whichever transition to phase 2 is closest to 25% boss health.
I've got a hairbrained idea or two that might make the fight easier, but you never know until you see it firsthand whether or not those types of ideas work out. We'll see!