Fleur Delacour, arithmancy and runes prodigy, is arrested for bringing down the wards at the French Ministry at the age of 11. She is not allowed access to her wand outside of classes and is escorted at all times by a team of Aurors until she comes of age.
With the announcement of the Triwizard Tournament, though, the Ministry decides she should be let out early for good behavior- as long as she is the Beauxbatons champion.
And while she's at Hogwarts, maybe she could take a look at whatever changes Dumbledore has been making to the school's protections, just in case....
In other words 1995's Hackers but Magic.