The choking darkness would have worked quite well on Aeotha. Shadow magic always did, it made her face tight as she stared out into it. Unable to see very much of what was going on, but enough to knock the closer attackers away, and continue holding the holy shield around Fiathe. The most important thing was to get the wounded out of here, and perhaps then Aeotha would be forced to flee with the former Queen. She had been entrusted to Aeotha for protection, Aeotha could see that now. Iluvatar has not simply put her there to help, it was to be protected. He could trust Aeotha, and he could not take the time to watch both Fiaethe and the war that was coming. Aeotha spun the staff and drove it into the neck of the closest attacker, his armor bent under the force of the strike and closed around his throat, he fell back behind his comrades. More arrows flew in a flurry striking the shield, but the well aimed ones were coming so fast that Aeotha was having a problem deflecting them.
Then the darkness was blasted away. Aeotha turned her head for a moment to stare hard at Skandra. Help he might have been, but the trust simply wasn't there. She did not want to kill him, whether she was capable of killing him or not wasn't a question, she did not want to do so. But that did not mean she would be calling for his help, especially using that alchemy that neither understood. Skandra kept looking surprised with every new thing he did. Dangerous, not to know what you're capable of. Where was Elemmire? Hidden away somewhere? Turning people to dust out of the path of Aeotha's sight? Dangerous.
The short script which flew from her lips as the attackers swarmed her was angry sounding. Her staff struck the bloody stone beneath her feet and immediately the area around her grew brighter, so much so the stones themselves took on light and grew warm to the touch. An arrow flew under Aeotha's arm and continued on in hopes of catching Fiaethe, the Queen was fast enough to move. Smart too. It took a moment, they thought it was only light and warmth, but then the stones suddenly went dark and the magic floated free from them like a great white fog. There was nothing anyone close could do about breathing it in.
Elves that breathed it in simply felt warm. Of course it'd do nothing to Skandra. But those Drow that breathed it in. They were instantly suffering. They screamed at the pain shooting through them faster than their poison could do. The screamed turned to rasping breaths of agony. Then the vicious popping noises began and Aeotha pressed back in against Fiathe, the shield closed around them both now. At least one of the drow just exploded with light, and his innards and armor blasted against the shield Aeotha was still holding around them.
"Your light magic would work against them." A suggestion, the Queen could do as she liked as long as she stayed behind Aeotha.