Did you just get her? (NV, read she is a year old) My Bentley didnt eat and barely drank for over 24 hours. He then started vomiting brown stuff. We took him to the vet and he had to get IV fluids under his skin and an antibiotics shot. We had to force fed him a special diet food, and that was after he hadnt eaten for almost 48 hours.
I hope your baby is ok!! I know what it is like to worry about them.