Welcome to YT.
So, your puppy is 7-8 weeks old, right? First off, she was too young to be taken from her mother at this age. I would be extremely careful introducing this puppy to your others and they should never be left alone together. When it's not possible for you to be right there with them, keep the puppy separated in an ex-pen or crate.
What is she currently eating? She should be on a good quality puppy food now. It may help her to eat it moistened with a little warm water.
__________________  ~Ruby, Reno, Razz, & Jack~ |