[quote=@Tip]
Mhm. Well, Ravenclaw, right? Besides, Harry Potter could do it in fifth year if I'm not correct?
[/quote]

A student should not normally be able to preform one of the most incredibly advanced magics in the HP universe. Harry not only possessed a piece of one of the most powerful wizards to exist in centuries inside of him, but he was also the Chosen One, and trained personally by a member of the Order of the Phoenix who specialized in Defence Against the Dark Arts.

Not to mention, there isn't even any reason she would be taught it. It isn't taught in school, and there aren't a whole lot of Dementors flying around now that the crisis is over.

And before anybody brings up the small, elite few in Dumbledore's Army who managed to learn the Patronus Charm, this was during one of the largest Dark Arts crises of Britain's magical history, and they were personally taught by a piece of Lord Voldemort who was trained by a member of the Order of the Phoenix and was also the Chosen One. 

That's kind of a big deal. 

[b]EDIT:[/b] [i]To be certain, I should mention that I'm not trying to cause trouble or anything. It just sort of bothers me that Madison just casually preforms what nearly the entire wizarding population is incapable of casting, just so she could leave her friend a note. This is silly.[/i]