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Jail isn't the answer. Probation with conditions. Take away her privileges (not rights!) to access internet/social media/etc for an extended period of time while undergoing counseling for the underlying issues that led her to behave in such a manner. Once she actually understands that acting out in that manner is both immature and irresponsible, then make her talk to others about why they shouldn't do it either.
After a few years of responsible behavior, counseling and her actively speaking out to her peers about not committing such acts, then allow monitored use of internet/social media.

Unfortunately, our society doesn't allow for public caning of people who commit stupid, irresponsible actions.