electrical fault

One day I was in the kitchen with my son and the kettle began to boil. I asked my son if he had put the kettle on and he said no. I said you must have because it wasn't me. He said it was you mum, stop messing with me. It was around the time of the anniversary of my sisters death and I had been thinking about her a lot. A few days later my son & I were in the kitchen again and the kettle began to boil. This time neither of us were near it and we both looked at each other. I said there you go... it's done it again! I thought maybe there's an electrical fault or something so for a while afterwards I always made sure that there was water in it just in case it happened when no one was around but it never happened again when I was in the house. Also a day or so later I was alone in the house and the smoke detector went off but there was no smoke or heat or anything to cause this to happen. Approximately a year later ie around the anniversary date I was home alone. I recalled the kettle incident and giggled to myself thinking how odd it was as it had never happened again which triggered me to become very emotional again, missing my sister and wondering could it have possibly been her communicating from the other side! I was not a believer in this sort thing at all but some people had told me similar stories. I felt overwhelming love for my sister at that moment and then it happened. The kettle switched itself on again. It did not happen on her anniversary this year so who knows? Since then I have thought that maybe she was letting me know she is still out there somewhere and is now at peace? Whether it was a coincidence or something else it did consoled and comforted and has made me more open minded about life after death when I hear spooky stories!