The Discarded Saint

Waking up in what appears to be a strange swamp, running a high fever and staring down the fangs of a wolf was pretty bad. Sad to say, it actually wasn't the worst way Ariana had ever woken up. Not that she could remember much of anything very clearly.
Ariana finds herself in a cold and dark world, where, other than her new furry and feathery friends, there seems to be nest to no animal life. What is this place, and why was she here? Struggling to survive in a world where even the air she breaths is poison is pretty hard, but Ariana is nothing, if not a survivor, and now, with the goal of saving as many lives as she can, she had a reason to live again.