...In the Smallville sequel comic. Huh, although I'm happy for Steph to be back in comics, as Nightwing AND being written by the writer of her last solo series, I'm still not sure whether it counts as it's in another universe to the regular DCU. Oh well.
"Bruce can be somewhat of an angry man. Stephanie's personality is so can-do and unsinkable and bright, so it's very much on purpose on Bruce's part that he has a good cop going out on patrol with him every night," Miller told TV Guide. The article also confirmed that Miller would explain why she is Nightwing and not Robin. As for how long Bruce has been in action, Miller said, "Batman's been operating in a vigilante/urban legend capacity for probably a little bit longer than when Clark started being The Blur."