Batwoman & Flamebird Family History
In the WordBalloon podcast , Greg Rucka mentions that Bette Kane (retconned as Kate Kane's cousin rather than niece) will appear in Kate's origin story, beginning in Detective Comics #856:
Rucka: "When we put [Batwoman] in 52 we did it in haste...it was in response to the [New York Times] thing...and consequently there were certain problems that had to be reconciled ...like for her to be Betty Kane's aunt ...there has to be (a sibling relationship to Kate)... so they are now cousins ..you'll see Betty in #856.""
First, it's "Bette" not "Betty." Unless we're ret-conning her name again.
And, I dunno.... Bette is like, what? 23-25 years old? And the new Batwoman (Kate Kane) is what, mid-30s? She could be her aunt OR her cousin. Pretty simple and non-convoluted. Kate's brother (Bette's father) could be 10-15 years older than Kate.
I do prefer the "aunt" angle, though. It created a nice mirror to Bruce/Dick, so I don't see the need for the "cousins" thing. With Batwoman's brother as Bette Kane's dad... that's a more interesting dynamic to me, especially if they bring Bette's dad onto the canvas and develop him as well. Whatever HIS story is, it could create some interesting story dynamics between Batwoman and Bette.
Maybe Kate was the "baby" of the family; The spoiled youngest child. Maybe she had a bunch of wild teen years. Maybe her older brother resents her, because he was the responsible one. Maybe he doesn't like Kate's influence on his daughter. Maybe he resents the fact that Bette likes "Aunt Kate" more than her own parents. Does he even know Bette was/is Flamebird? What happened when he found out, if he did?
I think having Better's father/Kate's brother open up more story possibilities than "cousins"