Tough to tell from the pictures, but are you sure it is not a prolapse? Is the red projecting out at all? If so it is important that it is kept moist until you can get her to a vet to have it fixed.....My parrotlet has layed many eggs and never plucked her behind and it was never red like that except when she prolapsed twice.
I think I would try to get her to a vet ASAP...
I think I would try to get her to a vet ASAP...