Answered Pest Queen

This is how I managed to kill her:

I used black d'hide set, helm of neitiznot, barrow gloves, dragon boots, toktz-ket-xil (obby shield), soul wars cape and glory amulet. As weapon I only used Korasi's Sword.
My inventory was filled with Super Restores and Saradomin Brews on a 1/3 ratio. I also brought a War Tortoise which was also filled with Super Restores and Saradomin Brews on a 1/3 ratio.
You need to make sure you kill the Defilers right away because they can harm your Rangers, which take care of the Healers. When killing the Defilers, I prayed Protect from Magic and while fighting the queen, I prayed Protect from Melee.
Also, when she is charging for her special attack, use the special attack of Korasi's sword to stop her (failure will result in aprox 500 damage and death of your comrades). I didn't bring any Spec restores because I can't make them but bringing 1 should be enough to use the special whenever she does.

I hope this, and the other posts, are of much help and good luck on killing her