Aziraphale drew in a sharp breath at the mention of holy water and felt a flash of true anger flow through him. The urge to bring down some sort of holy devastation on the COS agents was very strong and he had to wrestle it under control for a moment. Crowley and holy water had featured in some of his worst nightmares. Not that he really slept all that much. He did on rare occasions when he was truly exhausted but he usually had better things to do, like read, and he didn't appreciate the nightmares. Maybe there really was something to be said for not having much in the way of angelic imagination.
He blushed when Crowley pulled back the covers to reveal his legs but he reached out to hold one hand over them before he really thought about what he was doing. He closed his eyes and reached out with his powers before breathing a sigh of relief.
"No, dear," he said, opening his eyes again. "You're fine. No trace of it left. They must have used some sort of... cheap knockoff, I suppose."
Though even a cheap knockoff could and should have done some serious damage. So something or someone had helped. Was it someone who had been fighting near Crowley? If so, he'd very much like to do something nice for them.
"It's been a few days." He hesitated for a moment. "I was flying as well and they aimed for my wings. It's taken a great deal of time to fix everything. Thank God for young Katie. She was a godsend when it happened. Kept everything stabilised until we were safe."