I'm so sorry, but I have to place devil's advocate here, I'm a dog trainer its my job. I'm probably going to overstep my bounds, and I'm asking for your forgiveness in advance.
It really isnt funny. Fearfulness of random objects/noises/people is often the first sign of a host of other behavioral problems that come later in life. How unhappy would you be if everytime you left your house, something terrified you? A confident dog is a happy dog. Enroll the little one in some firm, no coddling, common sense training and show the world isnt out to get her, its really what she needs. I can't tell you how much I work I have to undo from people who go too far with thinking its funny, kids (even adults) scaring the dog on purpose for a laugh. The poor dogs are neurotic and afraid of their own shadows. Not that I think thats what your doing, its just why I have a sore spot for it.
sorrysorrysorry I had to.

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