Adraya

Adraya is High Priestess of the inverted pyramid beneath Cerberus, the temple the drows built for a god that was not theirs. She holds the top floor with eyes like amethysts set in a face as old as the caverns, served by attendants who exist either to satisfy her or to be spent in a rite.

She is the most capable drow anyone in this story met. Glandir came to her disguised as a priestess, an illusion good enough to walk him through an entire city and into a private council. He asked for the cure to his daughter's sleeping sickness. Adraya told him to breed a stronger child and pray to Cauchemar for it—weakness was not worth preserving—and his hesitation was all she needed. She read the auras straight through the illusion. You are not even a Drow. Then she raised the room at him: boulders, a ritual bath, ornamental beams, everything loose in the chamber at once. It nearly killed him, and his own red blood finished the work of exposing him.

That is where being formidable stopped mattering, because the man she had spent the week hunting was standing at the far end of the hall. She threw a stone beam the width of an old tree at Gyllyn Leblanc; it exploded against his Armor without his moving. He crossed the room faster than Glandir could follow, appeared behind her, and killed her with one punch and one kick. He had not meant to. She was the only person alive who knew the cure, and nobody in the room worked that out until she was already on the floor.

Armure brought her back, spending the resurrection diamond she happened to be wearing herself—the component is rare, and she was carrying her own. She gave Glandir the cure. Then she asked Gyllyn to come back and rule the drows once Cauchemar was dead, and he declined.

That offer is the whole of what happened to her people. A High Priestess met a man who killed her by accident and did not stay to see whether it worked, and her considered response was to offer him the throne. Zaran Mor would have had another answer.