She still needs to be fed on complete puppy food until at least a year old, but you could try another make or what I do is to open a tin of dog food and put a couple of spoons in with the dry food, then mix it round so it is coated with the meaty gravy jelly stuff, although mine will eat it dry I feel better giving them some nice flavours!
I feed mine Eukanuba but any of the good quality puppy foods would be ok, but you must change it over gradually over about a week.
You can give her two meals a day now she is six months but if you feed dry food you can measure out the days amount and leave it down for her to eat when she wants it.