15 Millimeters of Existence

Hermione accidentally falls through time to land at the feet of Severus Snape, the man she believes betrayed the Order. As Fate thwarts her every attempt at its revision, she discovers the limits of her paradoxical existence-within the blindspot of Time, 1.5 millimeters to be exact. Can love arise in this claustrophobic climate of almost absolute certainty? Slightly AU, SS/HG, WIP