acceabex
Songster
However, just because she's disabled doesn't mean she's doomed. You need to prepare yourself for the worst, but many people have had disabled birds live for a long time.
I have two crested ducks... Not my choice. I don't let either of them breed. But they get along just fine being ducks. I do find myself constantly concerned about their brain.
It's not gloom and doom, but there's nothing that can be done. Watch her and see if she's progressing... Since it's genetic (like hair or eye color) there's nothing that can be "done" and no need to separate unless she's being picked on (it's not contagious).