Aha....the idiot is a male.....why did I know that?......I am male and have yet to make my first mistake in anything I do.....Do nothing is the key..Let her split the logs..He's done similar too. Our bistro table was looking the worse for wear. He bought the right paint (oh wonders do occur) but the wrong thinner.
Paint in France is strange, open a tin and it's quite thick 3/4 of a tin full. The idea is to dilute it with white spirit to your liking.
White vinager is not a suitable thinner.