What type of exercise wheel are you using for your chin? Can you post a picture?
Tuffs of fur I do not worry about, unless there is allot of it, as for the whiskers ... that concerns me.
Chewing whiskers is a sign of nervousness ... if this is the case, next she will probably start chewing fur. Bad habit to get into and can cause medical problems.
If the whiskers are falling out ... that could be due to the diet.
What brand of food do you feed her?
What treats do you give her?
Jo Ann