C.R.
Ok well this is from someone that has had three sinus surgeries and had a son that struggled as well. I really suggest that you use a rinse that can be purchased at Walgreens/CVS called NeilMed Rinse. It the one that comes with a bottle (not the kettle) that really irrigates the sinuses and not just moisturizes then. I actually used an ear bulb with my son when he was little but I wouldn't recommend it since you can cause a laceration if you don't know just how far to go in and they wiggle/cry alot. I would do this both upon waking and before bed EVERY day for a week or more and see if things are better. Is her nose runny most of the time? If it is and it's clear to a light yellow color I would also put her on a child's dose of Zrytec for a week to help dry things up but the flush should really help in keeping things cleared out so an infection doesn't set in. It's really hard to get them used to of the procedure but well worth the results. Soon both you and her will be used to of it. Also get her on a good muti vitamin, if you don't already and some powdered probotics to help her immune system out. I think the key is to become "religious" about doing it and you should see results.
Best Regards,
C.