Interesting that she works for the Royal Mail. I've got a couple of friends who work as posties and they both say how great the job is if you have creative urges. Walking the streets early in the morning with your own thoughts and then back home by midday to get on with the important stuff.
That's sort of the Albert Einstein patent office thing I guess. More time to think. I find my computer job works too, makes me want to shoot and process film, to get away from the digital electronic world...