Sometimes on CSI they investigate suspicious circumstances that seem to be murders, but turn out to be natural causes or accidents. Though in this case it looks like natural causes, so you'd need it to be something else. Er... maybe Mary-Sue-Avonsen's co-worker wants her job? Maybe somebody in her Bible study thinks she has theologically dangerous ideas that will corrupt people? I know! It's an angry fanfic writer, who didn't like one of her NetFic Reviews!