Incest
You are cousins
they were close friends
You are their aunt or aunt by marriage.
Father and daughter.
The offspring of your first cousin is your first cousin once removed.
Cousins
Your daughter's daughter is your granddaughter, and you would be her grandmother or grandfather.
2nd cousin
She is your first cousin.
Your daughter is your brother's niece. Your brother is your daughter's uncle
Your nephew and your daughter are first cousins.
my great grand-daughter
You are First Cousins
she would be my cousin
You are cousins
Your daughter and your niece are first cousins to each other.
daughter