What if she mailed it to herself?

What if she put it in a locked box before shipping it to herself UPS, and she has the only key?

What if instead of UPS, she hired a moving company to move the locked box?

What if she wrote it electronically in diary.txt, but it was backed up to a cloud provider?

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I'm guessing there's some sort of "reasonable expectation of privacy" for certain activities. We're going to find out what Florida courts think about this new medium.