Looking for half sister

[joco]

Hi I am trying to find my half sister. She was born Anne Thompson early 1944. I am not really clued up about what happened to her but I think she was fostered out at a few years old. She may have gone to live some where near the bottom of the moor and later I think the Greystones area (here I might be totally wrong). I have never met her, or I can't remember having done so, but I have been told she used to go into Endcliffe park to see mum, this is where Greystones came into it I think. I would be grateful if anyone can help me, apart from me wanting to find her she also has some cousins who would like to know her whereabouts.

Thanks everyone