When it came to Crampton Brophy's own marriage, she wrote frequently about it on the Internet, sometimes with a dark sense of humor that her readers appeared to find amusing.
She has also written titles such as "The Wrong Husband" - a 2015 novel about a woman who escapes an abusive spouse during a shipwreck in the Mediterranean and falls in love with one of the men sent to find her.
Crompton-Brophy's How To Murder Your Husband essay has since been made private.
"Based on information learned during the investigation, detectives believe Nancy L. Crampton-Brophy is the suspect in Daniel C. Brophy's murder", a release from the Portland Police Bureau read. She wrote that hiring a hit man was a bad idea, because they might "rat you out to the police", and ruled out poison because it was traceable.
Police in Portland, Oregon arrested Nancy Crampton-Brophy, 68, last Wednesday and charged her with murder and the unlawful use of a weapon. According to KATU News, students found the chef bleeding in the kitchen. The author had expressed her disbelief over the killing of her husband through a Facebook post and had even announced a candlelight vigil at the institute where her husband was shot.
Crompton-Brophy has not filed a plea and her attorney declined to comment to the press.
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It has sparked outrage in a country which considers it unlawful for a woman to spend time with a man who is not her relative. In a video widely shared on social media, the pair can be seen eating breakfast at a desk and waving at the camera.
"Divorce is expensive, and do you really want to split your possessions?" she wrote in a section about financial motives.
"I don't remember who said that but it's not true. She recalled him saying, "'Yes, but I'm making hors d'oeuvres'. "I thought she must have been one tough woman to handle that the way she did".
In the blog post, Crampton-Brophy gives the pros and cons of particular motives and methods for getting away with murder.
Crampton-Brophy is next due in court on September 17.
Ms Crampton-Brophy published the 700-word paper in 2011 on the website See Jane Publish, local newspaper The Oregonian reported. "And let me say clearly for the record, I don't like jumpsuits and orange isn't my color".