Try giving her some raw hamburg with rice or if you prefer boil the hamburg. This is always appealing to a dog and easy to digest, you could switch to boiled chicken for variety. At that age our vet always says to give them whatever they will eat. A scrambled egg with sardines is something most dogs love. The kibble doesn't seem to be a appealing when they don't feel well, also the dizziness will make her tummy feel upset and she will need something special to coax her to eat. Small meals frequently instead of one or two huge meals.