Just stick to the BB Wilderness. Mixing, and or every now and then throwing in a raw meal will cause gastric distress. It's the same thing as a vegetarian tossing back a T-bone...your body just doesn't know what to do with it.
If you want to feed a raw treat get some un-cooked, raw knuckle bones or beef marrow bones. But not until her baby teeth fall out.
Right now I'd stick with BB Wilderness (puppy or not it doesn't matter most of its marketing) and keep cans of pumpkin around to put in her kibble every time she gets loose stools or when you merely want to solid things up
Don't go nuts with the eggs either.....way too much bro-science regarding eggs and dogs and owners overdo it. 1 egg a week is more than enough (dependent on kibble nutritional content)
Plenty of fresh water and crate train from the get go.