I hope Zari is feeling better now! Love the fact that the vet was keeping the GSD close to keep an eye on it.
Can you get Royal Canin canned food down there? My current foster stopped eating after surgery to be spayed and have a massive hernia repaired two weeks ago. She was feeling pretty puny post-surgery, and the only thing I could get her to eat was Royal Canin Mature 8+ canned food. It has an appetite stimulant in it. My foster isn't a "mature" dog, but it works, so I gave it to her. She even prefered it over human grade canned chicken or Vienna sausages! I'm now mixing it into her kibble and will hopefully be able to wean her away from it eventually...