I Prefer the Cold {A Loki Fanfiction}

Astrid Thornhill, niece to the well known Clint Barton, and not so amazing agent of SHIELD, was assigned to keep watch on the Tesseract. Of course, because Astrid was there (obvious reason), everything had to go horribly wrong. A brainwashed uncle, war in the air, AND the most dangerous thing on Earth stolen wasn't s...