Maybe try propping up one end of the bed so the congestion doesn't come into the nose as easily

Do you have a vaporizer you can turn on for her? that will help a lot. try using her bulb syringe to pull some of the mucus out and wet a qtip to swab around lightly to get the remaining. I also use to take my pinky finger and put a drop of water in each of my sons nostrils to make it moist to help him breath better

Have you tried a humidifier?