my little man was on EBM occasionally from about 2 weeks old and i have never had a problem with him taking bottle or breast. have you tried maybe sitting in your bathroom with the shower on hot to let the room steam up and feed in there (with a chair might help lol) i know people recommend the steam to let them clear their nose - so maybe feeding in their at the same time might help her breathe a bit better?

(as you can tell from my ticker - its all new to me so please disregard my advice if you want! )