These two kids grow up together, a boy and a girl.she can't really walk all that well, so he always carries her around.they grow up and fall in love, but he has to go to war.I think it was the war between the germany and poland.so he goes off and little bit later the girl gets a letter saying that he is dead, but she doesn't believe it. She goes off to fin him. One part in the movie, she is sitting in a café and a woman over hears what she is tell another person and the boy, and this other lady gets up and on a black chalkboard, she wipes off every word but leaves on

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This woman's husband of love of her life was killed and she is looking for the man who killed him, and she does find him, kills him while dressed as a man...

It's the French flick A Very Long Engagement (http://www.imdb.com/title/tt0344510/plotsummary), starring Audrey Tautou (from Amelie).