Thread:GZilla311/@comment-2111740-20150727185852/@comment-10786238-20150727215608

I got it from a combination of looking at it (yes, it's that one you said) and some comments I've read around that reminded me. Here's the summary.

1. When Nigma proposes the idea of a bird-themed codename to go with his Mockingbird identity's female sidekick in the vein of Harley Quinn to the Joker, the brunette girl doesn't say no. If anything, she looks amused. This seems to indicate that she's amused because she already has one.

2. Her comment about how "you people" tend to have a "moll fetish" seems very in character for Ms. Crawford.

There's also meta reasons, such as how Gail Simone wanted to write BoP, but that's less important.

Again, I can be wrong, but it seems heavily implied that it's her.