I can see my mother is calling me. I answer the phone, knowing I'll have to tell her about Oliver and me breaking up. But before I can, she announces, 'I don't exactly know how to tell you this... But I'm leaving your dad.' Single together for the first time, 34-year-old Meg and her warm-hearted, long-suffering mother Sally are cancelling Christmas, and running away to a tiny cottage on the Cornish coast. For Meg, it is the...