I see you went offline so I wanted to give you some information to review when you return.
The most common reason for runny noses are
* Herpes Virus
* Upper respiratory infection
* Dental disease
* Foreign object in the nose
* Bacterial or fungal infection in the nasal cavity
If she is eating and drinking normally you can try giving L lysine . This can be purchased at most pet stores and health food stores. 500mgs per day for 7 days then 250mgs per day as a supplement.Click here for this product
You can also use saline nose drops. We recommend little noses for infants. 2-3 drops in each side of the nose twice daily.
If she stops eating or seems to decline in any way I would have her seen by your vet to be sure this is not an upper respiratory infection
For fleas I would recommend Revolution . This not only protects against fleas but also heartworms, mange mites, ear mites, and intestinal worms.
I hope this helps, please reply back if you have additional questions