…for revenge.

Revenge so she could slip into his bed in the dead of night and slit his throat.

He had killed her true love, and when he was dead she could find a man worthy of being king. 

Revenge. 

That night she brought her knife to bed and when the time was right, killed him. Just the way Daddy taught her.

She remarried a man who actually loved her and they lived happily ever after. The end.