Coriolanus
Banned
That's not quite true. It was supposed to be from "experimental surgery", so the how and why are technically known in a sense. Doesn't mean it can't degrade again although I'm not sure what I'd think of that. :x
Just have it degrade and then Babs ends up developing an exoskeleton to be able to keep performing her role as yet another useless member at the bat family. After a coupla ishs, drop hints that she's hitting the boxed wine hard to cope with it. Eventually start an arc called "devil in a box", about her struggles with alcoholism.
Bam, eisner.