1977 : How can I trust you ? (Harry Potter)

[Harry Potter fanfiction]
Seven years since the Dark Lord is terrorizing Great Britain.
Seven years that British wizards can't trust anyone.
Seven years of Muggles being slaughtered.
Seven years that London is no longer a pleasant place to live.

But Edith d'Aveyron opened her store there. French, she graduated from her alchemy baccalaureate five years ago, and has been at the head of a major fashion house for two. Despite warnings, the young witch heads off to London in the name of profit. Behind this cover, however, lies an entirely different motivation : who would suspect that a Frenchwoman, and a woman at that, would act as an intermediary for the Witch Resistance against today's greatest dark wizard, known as Lord Voldemort?

But now her mission is joined by the torments of love. The unattached woman who had promised herself she'd only do her duty, now finds the stranger of that dear night in March 1976. However this supposed Muggle, who happens to be a wizard and an auror as well, is certainly much more than that : too many clues point to him being the ones she's fighting: the Death Eaters.

~~~~
Background information:

The universe belongs to JK Rowling, but the new characters and plot belong to me.
The story takes place during Lord Voldemort's first reign of terror, a few years before Harry Potter was born.

The cover was designed by @AnaExva , whom I'd like to thank very much!