The Paris Connection by Jaye Robin Brown 

When Hannah and her boyfriend, Simon, board their train with only a few seconds to spare, they’re confident that they’ll make it to Amsterdam in time for his sister’s wedding. But unbeknownst to them, the train is scheduled to divide in the middle of the night. And when it does, half of it continues on the route to Amsterdam. And the other half–the one with Hannah in it–heads 300 miles away, to Paris. Left without her luggage, ticket, cell phone or hope of reuniting with Simon, Hannah has no choice but to spend the… Read more.