You need to get her to an avian vet ASAP- Yes, these are signs of extreme respiratory distress and birds hide illness, so by the time you are seeing it, you must act quickly.
Do you cook with non-stick (teflon/ptfe/pfoa/pfcs?-- these are often in things like space heaters, blow dryers, pots, pans, air fryers, griddles etc) Have you recently used scented chemicals or a self cleaning oven? Any aerosols etc?
If so quickly get her to fresh air--- avoiding drafts and cold air, obviously *but, IMO, cool air, while dangerous in terms of shock is better than nothing if your bird has been exposed to teflon/ptfe/pfoa/pfcs from heated metal non-stick products*