Tips.

Tank her next to the back rock. She will Tp to the side to cast a beam wave of death, stand behind one of the 4 rocks.

Continue tanking/dps in the corner. She will spawn adds to destroy your rocks. There 1-2 shots mobs so down them FAST Rinse repeat once more.

She will now Tp to the middle. Keep attacking tanking her. More adds will spawn, kill em. She will now TP to the middle again! Get behind ANY remaining rocks and TANK USE YOUR DEFENSE limit break!. If your whole group has more then 80% hp you will all tank the blast rocks or not (as long as tank limit breaks).

Now she will cast a vortex around the outside of the map. stay in the inner circle. More adds, kill em. She will now TP to the outside edge where u cant attack her. She will target the tank with a wave blast. Everyone healers and dps stand on the opposite side from the tank and it will miss you. Now dps her down some more.

(by this point u should have a 2nd limit break. DPS USE IT)