My mum talks frequently of her mum who died 4 years ago and i overheard her in a very strange discussion recently regarding her and that my grandma had always been able to do strange things, she said "mum was the seventh daughter of the seventh daughter" that was why she could 'do things' i have no idea what that means, and my mum will say she isnt convinced by all that stuff anyway, so she is very vague, can anyone help?