I am struggling a bit to settle Penny down for brushing and she is starting to shed - EEK! I usually wait until we have exercised her and she is settled for the evening, but it seems that no matter how tired she is, she can still rally when she sees the brush or Furminator. Nothing aggressive or frightened - she just wants to play with the brush and will not stop with the wiggles to let me brush her. Any hints???