Thanks for your question, my name isXXXXX and hopefully I can be of some assistance.
I'm sorry to hear that your dog is not feeling well, but hopefully she'll be feeling better soon.
Sneezing in dogs can be due to multiple underlying causes. Usually they are related to an underlying viral/bacterial infection or allergies, however there are many other causes as well. If there is a viral or allergic component to the sneezing, it will probably start to improve within a few days. If there is a bacterial cause, or you notice a mucoid nasal discharge, there may be an underlying bacterial cause, or a bacterial infection secondary to the initial infection. If you do notice a mucoid or purulent (yellow) nasal discharge then I would recommend having her seen by a vet so that appropriate medications can be prescribed.
In the meantime, you can create your own nebulizer treatment by putting her in the bathroom with you and closing the down while you take a hot shower. Breathing the steam from the bathroom will help to hydrate and soothe the tissues of the nasal passage. Otherwise, it will be up to her body to heal.
I hope this question was helpful, and I wish you both the best and her a speedy recovery.
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