Missing ring turns up....

In 1983 my father had his signet ring cut from his finger. It had been a 21st birthday gift from my mother to him and he never took it off till that day when it was found he couldn't. So it was cut off. Then at 13 years old, I picked it up, put it on and under huge trust wore it for many years. When my taste changed from gold to silver I removed it put it in a box and safely hid it away in my tip of a bedroom until a few years later I decided to have it repaired as gift back to my father. To my memory I took it to a jewellers in Camberley high st and left it to be repaired. They never called to say it was ready to collect and when I enquired found they had gone bust and closed with the loss all stock and of my fathers ring. Cut forward 15 years or so and my father passed away quite suddenly and after 52 years of marriage my mother was alone and the memory of the signet ring returned to me with a heavy sense of guilt that played on my mind most deeply. I had to find a way to tell her of it's loss and preppared to do so in the near furture. Maybe a week or 2 passed and my mother visited and while she sat talking of nothing in particular a silver chain round her neck swung forward and on it was my fathers ring, unrepaired. When I quizzed her as to where she had found it she had picked it up somewhere in the house, eusuite cabinet I think and slipped it on her chain a couple of weeks back just at the height of my anguish over it's loss.