Loving the story, and I really don't want to poke holes because it enjoyable as it is, but one thing I don't understand is why they cant use a warming charm to combat the cold and even send a patronus to give their location..?
Author's Response: It's ok, there's really no holes you can poke at this point. 1) A heating charm would be too easy and it doesn't have to exist in a story. If we use magic to fix everything then there's really nothing to write about. 2) Who's to say that Dumbledore taught his staff how to use a patronus at this point? The books only say that he came up with this way to use them, but I do not believe it says when he taught his staff or when he came up with it. Even if Dumbledore did know Snape and Harry's location, there's no guarantee that there's a good way for a human to get to them. At this point all they know is that there was an airpath large enough to get an inhaler to them.
3) (Though you didn't ask rusulka7, this is addressing other reviewers questions): They can't get out via floo because Hogwarts isn't connected to the Floo Network. That's why Dumbledore had to use Fawks to get out when he escaped in his office from Umbridge.
Thanks for your review (and thank you to the rest of the reviewers as well).