She no longer needs milk, so you can stop giving it to her.
For home cooked foods, you do not want to add many spices. Don't add onion at all as it gives indigestion.
You always want to feed 1/3 meat to 2/3 veggies, fruit and grain. (grain least)
Cooked ground chicken or beef is best. Dogs also love potatoe and carrot. Some fruits my dog likes are banana, blueberries and cranberries.
The things you always want to avoid giving dogs are grapes, rasins, onion and chocolate. They are very bad for dogs.