Well, if Grayson wrote that, she's full of crap, I'm afraid. Grell's Dinah was definitely not early 20s or anything like it, and if he ever actually said on-panel that she was (which I don't think he did, but admittedly I haven't read the whole thing), I put about as much stock in that as I do in his "totes not a rape!" claim about LBH. The way he wrote and drew them she couldn't have been more than ten years younger than him (Ollie turned 45 in Grell's run BTW, he was all midlife crisis boy all through that era), and the League timeline doesn't begin to match up otherwise.