Dogs don't usually like to be held. Don't do the things that will trigger the growling, particularly picking her up, and work on some positive, structured training so she learns to trust you more and to look up to you for guidance.
In most puppies, behavior like this isn't true aggression, but is usually some mix of fear, brattiness, and insecurity.
In most puppies, behavior like this isn't true aggression, but is usually some mix of fear, brattiness, and insecurity.