Just like my sister!

I had a strange experience today. There's a lady who shops in Tesco who is the spitting image of my younger sister. Tall and slim with a short white haircut. Many times I've thought, it can't be ....... because she lives in Edinburgh.
Today I spoke to her, and she was very nice about it. She herself has 3 sisters.
The strange thing was, when I got home, went online and there was an email from this sister, with a lovely message.
Normally we're not very close, 9 years between us, and we're of very different natures.
Family is so important.