User blog comment:Tortor/Who ISN'T the mole?/@comment-174.251.248.154-20120129033822/@comment-64.247.102.133-20120129153331

Actually I think I saw Artemis getting her Birds of Prey invite on the second story page of issue #100. She's on the left side and in the center, next to Grace Choi. Her location says Gotham City. Also Catwoman was invited as well, so the invites weren't limited to people who were purely heroes.