K.H.
Hi S.!
I don't know of a cure for bloody noses. Direct pressure is the number one way to stop bleeding, but this is very difficult when it comes to nose bleeds. Your suppose to sit up, firmly squeeze nose, with head tilted foward, for 10 min. Humidifiers are suppose to help, which you have tried. Normal saline nose spray 4 to 5 times a day may help. At bed time you can place a thin coating of vaseline on the inside of the nose on each side of the septum(the midddle part of the nose). I have heard that ice packs or cold compresses can help. Cold causes the blood vessels to constrict which should in turn cause the bleeding to slow or stop. I have also heard that when a nose bleed occurs you can spray a nose spray like afrin in the nose before holding pressure and this is suppose to help. If her pediatrician hasn't been helpful, maybe you could ask for a referral to an ear, nose, and throat specialist. I hope this helps!