Nightmare to Dream

Callisto Evergreen, a girl with a "rocky" family backgroung, sees her life change in front of her as soon as she gets her letter, and the ones who accompany on her little "adventure" are none other than Sirius and Regulus Black. :) TW: psicopath behaviour, torture, possibly disturbing chapters (I promise it gets better after the first one)
Authors: Irene (unexpected, I know), Giulia (she's a really kind and amazing friend of mine)