malnutrition advice

Question
I've been searching for some valid information everywhere, and my vet says to have patience,but i am a worrier. I recently adopted a GSD and when i picked her up she looked REALLY skinny to me they assured me that this was normal as she was a puppy(they are a breeding place) Got her home and she had nonstop diherria , thinking it was stress i let it pass for the day ,the next day, took her to the vet because it seemed to not subside, he said not only did she have worms, she was also showing signs of dehydration, and was severely malnutritioned. This broke my heart, i asked what i could do and he said not much, give a good diet and wait. He told me to use science diet, i have been incorporating raw meat( liver,steak,heart). but i do not want her to have internal problems, which the vet said was very possible because her intestines were swollen, her back legs also are turned inward ,(the  bend area) he said that could change but also might not. It has seemed to get a tiny bit better, but the "runs" haven't i just want to make her better any advice would be greatly appreciated thank you! ive seemed to put 2 pounds on her but it comes and goes . Oh and sorry she is a female,14 weeks, and not spayed. I've had her just over a week

Answer
I would keep working with your vet.  The Science Diet should be as good as anything and it alone may be better than adding the meat.  Modern chows are carefully formulated to give the dog the complete and balanced diet it needs.  The raw meat could have Salamonela or something and cause more problems.  I can think of some other things you could do, but if she really needed them, the vet would have told you to do them.  

Even once her digestive system recovers from the worms and malnutrition, she still may not eat enough to keep from being skinny.  That is normal, and unless it is so bad the vet suggests action, I wouldleave well enough alone.

Frankly valid information about dog nutrition on the net is scarce.  It is dominated by kooks reporting all sorts of untested theories as fact.  I was well grounded in good dog care before there was so much junk scinece on the net.  Your vet sounds like he knows what he is doing, stick with him.