This is amazing, sweetheart. I love the characters, the plot is rich, and the details are fabulous. The story really hooked me in from the start. I really liked the OCs at the start, and I love how you introduced Severus into the story, how you resurrected him, and how you kept him.
I also really like the 'stopped just short of rape' line for their activities with the mask. It shits me that a lot of authors won't admit things like that, and I have a lot of respect for you that you'll do that.
The snake spine charm was perfect. Autofellatio is hot.