Hogwarts' new Secret

When two strange girls find themselves in a British alleyway, they assume they've been kidnapped. But they soon forget about this in the euphoria of finding two Hogwarts letters in the backpacks their apparent kidnapper forgot to take from them. Unfortunately, the girls soon discover that there is a dark secret about them that they must hide at all costs. Not to mention that they've started hearing voices....
This fan fiction does not have any non-cannon ships concerning the main characters, some side characters may have pairings, unless the pairing contradict cannon. PLEASE NOTE THAT THIS FANFICTION IS NOT A SHIPPY FIC! If ships is what you want, read something else (but also consider reading this because it is still good without being ship-centric).

Discontinued, but if you want to read it, go ahead