Well, she was still pretty young when Bruce started, according to her Post-Crisis Secret Files & Origins, though that was also before Jim became commish, so if he's already got that title, then there's definitely something wrong. It's also a question of what kind of timeline or continuity Confidential carries within itself if she's maybe 12 here when she was Batgirl age just a few arcs ago. I know it's the stories of Bruce's earlier days, but was The Bat & The Cat a jump ahead, or is this a jump back?