So one thing I think that really defines a tragic story to me, is when you can read it/watch it/experience it, know that it will all end horribly, and still desperately hope that it will not. You can see the ways in which everything will fall apart, and all you want is for something different to happen this time, just this once, even though you know it's not going to happen.
(This message is brought to you by Atonement, which still problematically falls under the "girls/women lie about rape all the time!" genre. Everyone is very pretty in it, though?)