Regarding the OW and dinner... Why don't you purposely create the worst meal you can and serve it. Maybe the OW will look else where for her future meals.
That's a very strange request anyway. Remember that movie, "What about Bob" with Bill Murray and Richard Dreyfuss? Where Bob follows his therapist on vacation and tags along with his family everywhere they go. That's what this OW your dealing with reminds me of. I don't mean to make lite of your situation, but it is a bit comical to the outsider.
"It is curious that physical courage should be so common in the world and moral courage so rare." -Mark Twain
