Yes, trying to kid some dogs with their medication can be an uphill struggle.
Dogs have an extraordinary good sense of smell, and probably guessed there were pills
in her food even before she got close to her bowl. You could ask your vet if the pills can be crushed, as this would probably make it easier.
I just wanted to mention the fact that you regularly give your dog milk ... unfortunately, milk is not good for dogs, so I would stop this straight away.