Magic Mirror by Michaela Thompson

Florida transplant Georgia Lee Maxwell doesn't take to Paris at first, despite the fact that she's at least leaving a no-good man and a hated job as a society editor. Now she's a Paris correspondent, thank you very much—a dream come true for any journalist.
There's just a slight down side—she arrives in freezing rain, gets caught in a traffic jam caused by a bomb scare, and hates her apartment; but the real Bonjour is finding herself face down on a museum floor during a robbery. "Killed for a boring story!" she thinks. But as it happens, she isn't the one who dies. Three terrifying masked gunmen shoot the unfortunate security guard.
They could have stolen all the treasures of Monte Cristo's cave, so to speak, but it turns out they've made off with only a mirror. True, it once belonged to the French seer Nostradamus, but it may be the museum's least valuable item.
Does it have some prophetic ability? Does someone know something the gendarmes don't? Here's what Georgia Lee knows: If she finds out first, she's a journalistic hero. If she doesn't, she's dead. From Goodreads.

This is a suspense supposedly about the Mirror of Nostradamus, but there are other things happening as well. It didn't end as I expected but that didn't matter as I basically didn't like the main character.

This book qualifies for:
Goodreads Reading Challenge 2015
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A Million More Pages Hogwarts: Summertime Mountaineering
A Million More Pages Hogwarts: Diagon Alley Supply List