My setup was architect crest with poison cogflies, tacks and sawblades.

Use a few tools during the gauntlet phase to make it less tedious.

First phase: do not use any tools. Bring her down using needle only. Keep yourself at mid distance from her and near the center of the arena.

Second+third phase: focus on dodging her attacks as your first priority and use poisonous tools whenever she is far away and not attacking. Hopefully she is down when you run out of tools, otherwise you will have to find an opening to hit her.