Missed reunion

In June 1971 I went on holiday with my sister, her husband and their 2 children. We travelled from Manchester to Torquay - quite a long journey at the time. I was nearly 13, my sister, a lot older, was 30. Her young son, then one year old was a baby who cried a lot. He was getting better but she kept him in a good routine and so every day left the beach just after lunch and returned to the guest house. She would sleep at the same time as my young nephew. One day as we returned at about 4 pm - me, my brother, brother-in-law and 2 and a half year old niece, my sister told us she'd had a really disturbing dream - about an old friend of hers - someone she'd been inducted into her first job with at the age of 15. She hadn't seen her for years. In the dream my sister had woken up and looked out of the window into the back garden of the property. The back gate had opened and staggering up the path, using 2 sticks and looking very unwell was this old friend. What could it mean, she asked. My brother in law pointed out that we were in the middle of an amazing heatwave - we were all tanned as though we'd been abroad - and he added that she'd had practically no sleep for a year and was just relaxing back into normal life. So she let it go. That September, one evening, she got a phone call out of the blue from the old friend. My sister thought that it would be insensitive to mention the weird dream. The friend told her the reason she was ringing was to say that she was recovering from a severe stroke - brought on, the doctors thought, by the strong nature of a contraceptive pill she had been taking for some time. She went on to tell my sister that she's just returned from a long convalescence, paid for, very kindly by her in laws. She was feeling much better and was ready to tell people about what had happened. My sister asked whereabouts she'd been to recuperate. Torquay was the answer. Still not twigging, my sister said that we'd all had a wonderful time there in June and mentioned the guest house. Her old friend said that was the very place where she'd stayed - it being owned by friends of her in laws. My sister had not had a dream, she had woken out of exhausted sleep and seen her ill friend struggling in the garden, then she'd gone back to sleep and in fact continued staying under the same roof as the friend for another 8 or so days without either of them realising the other was there.