I mean, continuity as inconsistent as it is, they could just say Hush was where she learned his identity but that doesn't seem to be King's taken on it (where Selina apparently knew almost from day one).

Although I've often felt King's comprehensive approach to the relationship has also been at odds with how he writes the relationship at times. Like, would they really go from their dynamic in the annual to all those flashbacks where they're more antagonistic and she's much more openly a villain?