Not Nu52, but I wanted to say that I really enjoyed the Batman story in Batman Beyond
Unlimited 14. It focused on Terry's girlfriend Dana and with her coming to terms with the realization that Terry is Batman.
I'm happy to say that Dana is smarter than Lois Lane.
She put together the fact that she sees Batman more than anyone, the fact that Terry is never around when Batman is around, Batman's body language and inflection of voice and the fact that he knew her name and put it all together. She also figures out that Bruce was the original Batman.
Terry tries to deny it, but Bruce welcomes her to the "family", as long as she realizes the danger and responsibility. Those who saw the JLU episode "Epilogue" know that she handles both quite well.