When you were still writing for Batgirl, did you have any plans on bringing back the character Knightfall?

I felt like her story was done for a while, at least as an arch-villain. I actually like mega-arcs that end with real change. But she could easily have ended up in the book as an informant, behind-the-scenes manipulator, or something else. I liked her a lot, her origin really spoke to me.