[Susan]

Hi Tiffany, yeasty ears can be from an ingredient your dog is sensitive too & you haven’t eliminated it from her diet yet even thought you have changed kibbles there may be any ingredient she is very sensitive too, here’s a link “Facts & Myths Yeast Dermatitis” written by 2 Dermatologist Karen Helton Rhodes, have you seen a Dermatologist yet??
http://www.healthyskin4dogs.com/blog/2015/9/8/facts-myths-about-yeast-dermatitis-in-dogs scroll down & read the section about “CARF” Cutaneous Adverse Reaction Food

I would start a raw elimination diet this way she isn’t eating a dry kibble & isn’t eating the same ingredients that’s in most dry kibbles, my boy can NOT eat carrots he starts shaking his head, scratching his ears, ripping at his ears 20mins after eating a meal that had carrots also chicken is another ingredient my boy reacts too badly…..

I rescued a 5mth old kitten that had a real bad mite infestation the RSPCA treated her ears killed the mites but then when I adopted her she was still shacking & scratching her ears, I took her back to RSPCA vet & they did ear scrap & she had bad infection from the mites, so they gave me drops to put in her ears twice a day & I had to come back in 1 week, another ear scrap & she still had ear infection so I had to continue with the antibiotic ear drops twice a day for another week, she was eating Hills Kitten dry food at the time, the Hills Kitten kibble was given to me when I adopted her, after 6 vet visits & antibiotic ear drops & ear cleaners the infection cleared up but she still had itchy skin & would scratch whole body, so I stopped the Hills dry kibble & tried a grain free Wellness Kitten kibble she was still scratching then I started her on a pre made raw cat diet & Ziwi Peak air dried raw Mackerel & Lamb 2 weeks later NO MORE scratching & ripping at her ears & skin…. Stop feeding dry kibble, either feed a raw diet with 1 single novel protein source or try a Freeze dry raw with just 1 novel protein a protein she hasn’t eaten before Rabbit, Kangaroo, Lamb, Pork, Ziwi Peak has their air dried raw or wet tin food raw
If this doesn’t help after 2months no treats no other foods except her raw or freeze dried diet, then book to see a Dermatologist & tell the Dermatologist what you have tried….
It might be environment allergies but I doubt it, ears are normally food related…..
Good-Luck it would be very uncomfortable for her…