Western women are bad enough with the thermostat, so I dread to think what a lady from the tropics is going to be like. A few tips to save you from single handedly consuming the entire daily gas production of a middle eastern state, don't show her how to operate the timer, if you have a quick 1 hour button on your controller - don't show her where it is, don't show her where the isolation switch is for the boiler and turn it off every time you leave the house, dont show her wher the switch is for the emersion heater either, otherwise like me in a previous life you'll find that you are heating the hot water by both gas and electricity, and then keeping it topped up at a steady 60c 24 hours a day. Finally, tell her that the thermostat is actually a thermometre and it is showing that it's 22c outside