At 6 weeks (in my former life as a kibble-feeding breeder

) we fed whole kibbles, soaked in warm water for 15 minutes before feeding. We had a few choking scares - but we did not let any of our pups leave the litter that early so it was more of a competition thing.
(In my new life as a natural-rearing breeder, at 6 weeks I'll probably be feeding minced raw meat and perhaps some veggies, and the pups will still be nursing for as long as mom lets them....)
We were also feeding 4x per day until 16 weeks. I wouldn't add anything else to her food - introducing a large variety of protiens too early is a large cause of allergies and other immune disorders. We didn't give a milk replacer then, but it might not be a bad idea at this point to continue it for a few weeks (raw goat's milk would be even better).
Also, be sure to read everything you can about socialization - 6 weeks is too young for her to have learned proper dog-dog etiquette, so you'll need to be the momma dog for her. This will help you avoid all kinds of problems later on.