It Was In Self-Defense, I'm Quite Sure

In his defence it was said, she would curiously Spy from the bay windows, like A latter-day Misses Marple Everyone was a suspect, every parcel Became a crime of illicit passion This then would be attached to fit a plot A plot to a perfect crime, day after day She'd elaborate on her latest new theory. Protagonist to all that went on With these ever-increasing, conspiracies Webbed out from door to neighbouring door Shed' relayed her latest new theories Till he/her husband could take no more! So he killed her, My Honor, the Jury With a Draylon curtain tieback; It was in self-defence, I'm quite sure.