Hey, I'm looking for a story that is placed in the benders episode. The little girl wants to have sam father a child for her, and she is attracted to one of her brothers. They tie sam to the bed so she can have sex with him, she doesn't get pregnant. She is a smart and devious kid who years later kills the cop lady.

Does anyone know what story this is? 

ETA: Family Ways by Maygra,  link inside.