She does need to see a vet to find out what is the problem: infection or mites. After the problem is cleared you will need to clean her ears periodically.
I’ve owned a long-eared breed over the past years that are prone to ear infections. I’ve tried all kinds of cleaners from the vet and over the counter. The best one is Derma-pet ear cleanser. You can purchase it either through your vet or over the web. Just do a web search for it.
Once I started using this the dogs never had another ear infection. I used it about twice a week as a preventative. On the dog I have now I use it once a week. She is five years old now and has never had an ear infection.
If you go to DermaPet’s website
http://www.dermapet.com/prod-09.html
There should be a tutorial somewhere there to show you how to properly clean a dog’s ears.
This product will keep the PH in the ear acidic to help prevent infections. And I am not affiliated with the company in any way. I have just been using it for years and so have many other owners of this type of dog.
It looks good. Thanks!
Interesting that one of the key ingredients in that product are acetic acid. That is the primary ingredient in vinegar.
Apple Cider Vinegar
http://altmedicine.about.com/od/applecidervinegardiet/a/applecidervineg.htm