Englehart created her. He had Bruce fall head over heels in love with her practically at first sight. Alfred hears wedding bells almost immediately. She figures out Batman's secret identity (something police, trained reporters, and other investigators can't do, and she's an heiress. A socialite. You think Paris Hilton could figure something like that out?) Once she does, she decides she can't be with him because she doesn't want to worry about him every night. She's the instigator of practically everything when she's on the page. It irritates.