THE ADVERT: Six months in the South of France, looking after elderly English lady while family travels. Separate en-suite accommodation. Must be a driver. Ideally 40+ and non smoker. All expenses paid. ME: Laura Bennett just 40 and been divorced longer than married. No dependents. Lease run out on my rented cottage. Sales job going nowhere. Time for a fresh start. So, I decided to go for it. I mean what could be simpler than looking after an 82 year old English lady? I had visions of gentle strolls to the boulangerie and compulsory siestas. But this was before I met Betty. She looked like...