It had never occurred to her to lie about the bruise. She had been subconsciously careful while bending down to check the ripeness of the squash, but once satisfied that it was still dinner-worthy, she stood with such purpose that her temple’s impact with the corner of the kitchen island made her feel tipsy before the pain came. She remembered her intermingled laughter and tears while answering the first concerned comment from a coworker the next morning, and was confused at their inability to offer at least a sympathetic smile. Was she so clumsy, so ditsy here at work that this further proof of her lack of coordination made people worry for her health? It was only after the fifth iteration of “Oh, I hit it on the edge of the butcher block in my kitchen,” that she realized her office-mates might actually be suspecting Louis of abuse! She cursed her lack of forethought and, tho it was already too late, began to formulate a mental list of less attention-getting possible causes for her dark rainbow of an eye. She would have to be more careful in the future lest some well-meant, nosy soul call the authorities to her home to check on her. She might even have to move Lou out of the chest freezer, just to be safe.
Just Kristin
… a gentil harlot and a kynde.

Okay this is really clever, but I’m still wondering about motive. Did I miss something? Could you possibly stick in a few (literally a few) works implying why she killed him? Otherwise, brilliant.