JMHO
Dogs or Puppies under stress won't show interest in food. Being so young, and new in your environment, she is probably a bit stressed. If she isn't showing interest in the Nutrical, it's OK to put a bit on her lips and let her lick it off. I'll bet within the next few days she begins to adjust and you find she really likes it.
It gave me some peace of mind when I got my pup, and like Melanie, I used it after her surgeries.
Bonding with her, establishing trust and making her feel safe will let her start to come out of her shell - and I'll bet soon you'll be pulling your hair out
Congrats on your new baby
