I entered dialogue with her and before I hit end, I spread by group around buffed, and summoned my pets near the hounds. Attested the fight and focused her down with my ranger and warrior. I cast living on the edge on my ranger since he died the most damage and is usually focused by the enemy. She is dead in one round. My pets keep the hounds busy. Then I teleport the hounds together and kill one which explodes and kills the others.

Don't be afraid to use source abilities on boss fights.