Post in the love bird part of the forum and you shouldbe able to get better help.
From what I have learned she should probably be in a separate room for now (quarantine) have the other birds and her been tested for the various diseases they can have? (not sure which one either breed has if any, the pro's will help with that)
but Iknow I had to test my sun conure for bird chlamydia (found him outside so he could have caught it from a wild bird or a bad breeder) for example...
Good luck, you have a lot of good guys here, they will help you!! Welcome to the forums!