After killing the King, a noble girl changes her identity in order to survive. Her relationship with the graceful, but unexpectedly cruel and married Vlad Tepes promises a splendid future, if not her strongest enemy: her past.

aha, I see what you mean.
it is a drama film, so I guess revenge could be a good plot, but not revenge of killing the King, I have something better in mind... Brace yourself, rewriting times are coming... :D

I'm not saying the revenging kin are the cause of her death. I'm saying they're coming after her for revenge can be a complicating factor that adds to her jeopardy and enhances the dramatic tension. The King can get the satisfaction of the kill, but he's not the only one trying to kill her.

The reason I emphasize using the revenge cycle is because it is one of the most dependable plot tropes in drama. And that is so because it mirrors one of the most compulsively repetitive motifs in human history. I would venture to say it's a plot device that cannot not be developed and paid off with further scenes if it is an inciting motive in a plot.

Well, actually, I can add this to the main culmination. The more facts will be revealed, the better... I'm still writing, (I'm far from main culmination), so I think I can add the fact she killed the King... :D