Dear Mary: How do I stop the cleaner ‘helping’ with my jigsaw?

Q. Unlike my wife, I am tiring of Netflix. Wanting a project to occupy me during these long dark nights, I invested in a marvellous wooden jigsaw puzzle from Wentworth. The 1,000-piece fine art seascape arrived and I set up a table and chair in our library in anticipation of weeks of quiet gratification. I spent the first few evenings laboriously working on the edges but this week I have seen that there has been progress made without my input. My wife and I can only assume that the culprit is our cleaner of 35 years, thinking that by adding pieces she is ‘helping’. I know she would be offended if I say something — yet if I say nothing she will ruin the whole point of my project. Mary, what should I do?
— R.E., Lancashire

A. Arrange for your wife to confide in the cleaner that she, your wife, is in your bad books as she added some pieces to the puzzle.