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Sigh.
Yes, I did have a backstory for her, and a whole character development. I didn't want to do the typical thing with her.
To be honest, I feel like she's one of the characters I failed on. I didn't get enough time with her to really show what she could do and be. I wanted her to become something very special. But I left the book for Wonder Woman, and Geoff picked her up and gave her some great screen time.
I have a couple characters I would love to have developed more. It happens, it's always a drag. The thing about Birds of Prey was always that the women were whole characters, not just a series of traits and tropes, at least, that's my feeling. We didn't get to develop JudoMaster beyond that stage.
I hope she's still around and someone will get the chance to give her a full, rich life outside of kicking and throwing people!