Im sorry to hear about your daughter. There are a few conditions in which this can occur. The first one is that a simple viral infection can cause a greenish discharge from the nose as well. The color of the discharge does not always necessarily indicate a bacterial infection, it can be the result of viral infections or even simply an allergic reaction.
Secondly, the bad odor coming from the nose however can be indicative of several things. It can result from a sinus infection which can cause the bad smell. It can be due to the post nasal drip. Sinusitis can be treated initially with the saline washes which you have already done and in ceratin cases antibiotics may be needed.
Another condition which can cause the bad smell, is the presence of a foreign object inside the nasal cavity, considering the age of your daughter it is possible that she put something up in there which usually children can do. If that is the case her nasal cavity needs to be thoroughly examined by a pediatrician.
Lastly the pus and blood inside the nose can also be indicative of a staph infection inside the nasal cavity. In simplified terms it is like a boil inside the nose which looks like pimple. Once it bursts it can release pus as well as blood.
These are some of the possiblities which can be the causes of what is happening with you daughter. However in all of these scenarios you will have to see your pediatrician in order to determine what is that cause. You shouldn't worry, the best thing to do right now is get an opinion from your pediatrician and have him examine her nasal cavity. Usually this can turn out to be nothing however in presence of blood and pus in the nose i would strongly recommend that you see your doctor.
Most of the infections listed above may even get better without antibiotics, and are treated with simple topical therapies like saline washes etc but in certain cases antibiotics may be needed, again dependent on the patient and results of the examination.
I hope this answers your query.
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