He was better at preparing his attacks than most. It had been almost a whole minute ago that he'd readied those air blades - he'd done it as subtly as possible, and in that regard it was quite impressive. The touch of this Tempest stuff was quite delicate.
But invisible didn't mean undetectable. Controlling air meant moving air, and moving air meant changing the balance of the room. She could locate the breaths from Allera, the circulation from room to room, the slight movements around Variance's barely-tangible form - but they were uniform enough to discern. The shifts in air around Strohger were too laminar and directed to mean anything other than his preparation for that 'sharp air' or whatever it had been.
The moment that flow shifted, Ayia sprang in an arc towards him. He began shifting the air around where she had just been almost simultaneously, but she'd seen the way his hands and eyes moved: incredible magic, certainly, but he was no warrior. None of his movements, reflexes, or perceptions would be remotely fine-tuned enough to even perceive her first attack, let alone counter it.
There was a small part of her that did kind of want to kill him, but her better judgement spoke otherwise. There were too many reasons not to.
Instants later, Ayia had swung around behind Strohger to slam her elbow deep into his back: just shy of the spine. Any closer would either have him permanently paralyzed or even killed outright - here, instead, would either knock him out cold or just throw his entire nervous system into short-term shock. There was the slight risk that eliminating his control over the air would turn it chaotic, but hopefully he'd be a bit tougher than that.
At the same time, she threw her other arm to hook around his neck with her elbow. She made a point not to squeeze against his jugular, but held him with a painfully tight grip between muscles hardened from years of training.