Wish I could be of more help, but mine will usually stop when I say a firm "NO".
Have you tried the "pebbles in the can" method? Shaking the can and saying "NO" when they are doing something undesirable? I've not tried it, but heard of it several times. Sounds like she's being a little "alpha" and you need to take back your control as leader. Have you watched the Dog Whisperer? He works on that kind of behavior a lot.
Good luck, I know there will be several trainers here to help soon!
__________________  Deb Sillers
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