I find that my girl very often goes off the normal dry complete puppy food, so from week 5 I generally will soak the food or use rice and add scrambled egg, chicken, fish or minced beef, that way she happily gulps the whole lot down. Chicken wings are also a favourite.
Anything that will basically just slide down her throat, I also give her goats milk. Very often bitches will go off their normal feed and need something with texture, protein and easy to eat. Their body has a calling for the good stuff.

Just do your best to add either rice or soaked puppy complete to the things that she desires.