Your father's sister's daughter (or son) is your first cousin.
My father was my brother and my sister was my mother
She is your niece, you are her aunt or uncle.
You are each others cousins.
Brother-in-law
She isn't related to you if that what your asking, she is just your dads girlfriend, also step-dads/mums/brothers/sisters aren't related either hahaha could be your future stepmother lol
First cousins twice removed.
your auntie.. your sisters father is your dad..your dads brother is your uncle..your uncles daughter is your cousin and your cousins mother is your auntie:)!
She isn't related to you if that what your asking, she is just your dads girlfriend, also step-dads/mums/brothers/sisters aren't related either hahaha could be your future stepmother lol
No, Jodie Foster is not related to Susan Foster at all. They are not in any way mother, daughter, or sisters.
Daughters of one (or both) the same parents are either sisters or half sisters.
Your grandmother's sisters daughter is your parent's first cousin, and your first cousin, once removed.
They are second cousins