I could not agree more with Jenny S. That is what I would do as well, my heart breaking all the time and the sweet little thing screams. However it truly is for her own good. I know it cant be fun for her to not breath but also (As gross as it sounds) All the snot and junk sliding down her throat and into her tummy, could give ehr a sore throat and a belly ach. So snot suck it out. And I live my humidifers!!! I would say use a cold mist one and nto a hot mist, because the hot water could burn her.
One lats little have dont with my babys is place a pillow UNDER the matress, but not under babys head. the little lift under her head will help with the breather. Agin under the matress not under her head.
Hang in there Sweety!