Zira responded to Crowley's nudge with a little smile. He didn't feel any different, really, since his meeting with Alexia, the way a mortal wouldn't really feel any older after a significant birthday. Things were vastly different, whether he felt it or not.
He was no longer an angel, stripped of his Principality, he was a demon. Low level, sort of like starting out in the mailroom of a large company, but he'd take it. No longer could his status be used against Crowley, not that it ever was, but Zira had been aware all along of the potential, if anyone had bothered to care about the doings of an angel with a demon.
Pulled from his thoughts, he appeared in the library doorway, leaning against the frame. "You called, dearest?" He said with a little lilt to his voice.