The part about his CO giving him shit for utilizing the Glaives to help find Prompto irked her for obvious reasons related to her own feelings for the guy, but on a logical level she supposed she understood why he was upset ... Still, Prompto was important to Noctis and that should have been enough reason to get the Glaives involved. Aurene looked visibly irked at that comment, and she sat back with her arms folded over her chest.

Don't worry, Nyx, she's not irked at you, She's irked at your CO for not considering her bestie/love interest important enough to look for when he was in danger. Thankfully they had found him in time to make sure he got the care he needed. She actually was grateful to Nyx for helping as much as he had when that whole thing happened.

"I guess fifteen years of building sexual tension will do that," Aurene finally said. What? She had no reason not to say it. It took less than two years for her to be lusting after her best friend, she could only imagine how bad it would be for these two.