I would not allow her access to anything other than the tugs you want her to play with; no balls of any kind right now. This is another form of equipment bias and it is counterproductive to good training. Your dog should happily play with anything you offer, anytime, in any environment. If you give in and go back to playing ball with her when she refuses the tug, you’ve actually reinforced NOT playing with the tug.
CLICK HERE TO VIEW THE FULL QUESTION AND ANSWER