visit to daughter's house

This was about 20 years ago, when our daughter (a nurse) had bought her first house in Sheffield and had the occasional nurse lodger to help pay the mortgage. My husband (in Buxton, Derbys) decided to walk to the local Conservative Club for a drink. He had stopped at at an ATM to get some money when he was accosted by a lady in a car which had stopped and she was asking for directions. "Which is the best way to Sheffield" she said. My husband said "which part of Sheffield, as you can go a couple of ways". "We're going to such and such" she said naming an area. "Whereabouts " asked my husband, feeling slightly odd. She then named the street. "What number" said my husband. "number 20" she replied. By this time my husband was in total disbelief. "That is where my daughter lives" he said. It transpired that the couple were the parents of our daughter's lodger, who had come from Glamorganshire to stay with her while our daughter was on holiday. The hairs still rise on my husband's neck when he thinks about it.