Thank you all,keep trying.The train crashed as one of the women went to the loo.She was pregnant and unmarried so the married lady leant her her wedding ring ring so she ,the pregnant one,would not be frowned upon.The married woman and her hubby died in the crash.When the pregnant woman woke up the hubbys parents recognised the ring,family heirloom,and as they had never met their daughter in law assumed this was her.Then it got complicated,Cannot remember the damn title though.Saw it years ago in subtitles....please help