No, never(discharge) from raw feeding and I would not keep changing things around but try to be consistent with her diet. This is all in an 8 week span? Vet hasn't done labs on her?
Because her immune system is obviously compromised, I don't know if raw is what I'd feed at this time. I think I'd do a homecooked diet with a consult from Monica Segal. K9Kitchen@yahoogroups.com
may be of help for some insight, but I'd still get some lab tests run on your girl.
What was/is the reason for the meds? and how old is she?