When you took her to the vet did they do any testing or lab work? At the risk of over-diagnosis I might get another opinion. Poor appetite is often an indication that something is wrong.
On the other hand, my friend’s dog is a picky eater and often skips meals, but the dog has been like this all along.
In your dog’s case it sounds like a sudden change in her appetite after that first year. Are her teeth okay?
Not to scare you, but when this happened to a dog of mine a while back, I took her to the vet and her physical exam revealed a slight temp, lab work was a little off, elevated white count.
Ultrasound showed tumors…
