It would be crass and simplistic to say that Horsewoman from Demon Knights #1 is a "replacement" for Oracle, who seems to be regaining the use of her legs in the new Batgirl #1.
But this is Bleeding Cool and we do a roaring trade in crass and simplistic. Two for a pound, no refunds.
So if you are looking for solid, no nonsense, expressions of strength in mind and matter, despite a clear and visible physical handicap, in superhero storytelling, well… Get ready to meet a new icon. You'll need to look up.