It sounds like she has a sense of humor. LOL. What you can do is get some super neat toy (better than your bed covers) and get her interested in that and reward for chewing on that....maybe a peanut butter stuffed Kong? Keep her off your bed for a while till she calms down. You can help her calm down by doing other things with her to replace that behavior which is maybe too silly and potentially destructive. Do you practice some obedience skills? Take her aside at times when she's running out of constructive things to do with some treats she reeeeeelly likes in your pocket and get her to get involved with you as a team member. Use positive reinforcement and make training fun. If she is kept more busy and gets plenty of exercise, she'll get more tired out and her mind will mature more as she has thing to think about. Obedience training is amazing in the many ways it helps have a better time with our dogs.