@Liam Johnson
May I humbly recommend that you research the background to this story. El Reg has already provided the links so it is not that fucking difficult.
It is clear your statement :"I suppose you missed the bit where it was the bad gossip about this woman's daughter that started all this in the first place." is a little, well, disingenuous, what started it wads a falling out between 2 teenage girls at which point the mother of one invented the account in order to try to find out whether any bad gossip was taking place - certainly not because of it.
Some quotes from the previous articles though, because it seems appropriate:
"According to TV news, Drew had set-up the "Josh Evans" account after her own daughter had a falling out with Megan Meier."
"After a confrontation between Meier's parents and Lori Drew, a police report showed Drew admitted she "instigated and monitored" the fake MySpace profile so she could see what Megan Meier might be saying to others about her former friend."
"Drew posed as a 16-year-old boy on the social networking site and drew 13-year-old Megan Meier into a romantic relationship"
"The final straw came in a message from the Evans account that said, "The world would be a better place without you." Meier hanged herself in her bedroom that same day."
"Posing as Josh early on in the online courtship, the faux boyfriend told Meier she was "sexi" and invited her to touch the "snake." Just hours after Meier killed herself, Drew and the co-conspirators deleted the fraudulent account and Drew instructed a juvenile who was aware of the scheme to "keep her mouth shut.""
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So, it is possible no laws have been broken - although I would imagine making the Sexi and "touch the snake" comments to a 13 year old girl are arguably grooming - it is still quite clear that this was not innocent antics of a concerned mother. In this case I would certainly argue 12 gauge justice as wholly appropriate. It might not be right, but I wouldn't blame anyone..........