Here is a link to the dog whisperer website. I believe he covers barking on there. The show I watched where he deals with barking dogs, he usues his hand to bite at the dog when it barks and makes a shhhhht sound. The dog stops barking. Eventually you will be able to control it with just the sound.
I would deliberately put her in situations where you know she will bark and when she does, use your hand like a dogs mouth and bite her on the shoulder and make a sound, any sound that you choose. She should stop, when she starts in again, bite her again. Practice this daily until all you have to do is make the sound.
Good Luck.
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