[Sentai]

I had a thought that turned into a wild what if type thing.

What if James hadn't been home when Joker came knocking on the door. What if she'd been having a dinner date with Dick, and he was the one answering the door. He would've gotten shot and lost use of his legs inciting Batman into pure rage for crippling the man he considers a son. But then he also kidnapped Babs. Taking her through the horror tunnel of showing what Joker did to Dick while he was in pain and bleeding on the floor, sending her off the deep-end and pushing her over an extreme edge creating an ultra-violent Batgirl or maybe even a new Harley depending on how hard she broke.

It's fun to speculate.