For a second there, I thought that panel with Babs was actually from GA/BC, like she'd just found out about Dinah's teenage Canary Cry mishap and was all upset over it. (Of course, sense came to me in the next second, when I realize it would just be way too convenient for that information to available to her in comic form.) *headdesk*
I'm just trying to think about exactly what age the Nirvana poster and other music references would put her at. Probably in the 30-35 range? I mean, I listened to Nirvana when I was 12 or so, but Kurt Cobain was dead by then.