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Your daughter's aunt is your sister, or your spouse's sister
Your sister's husband is your daughter's uncle
Their daughter is your daughter's first cousin (and your niece)
Her sister is also your daughter's first cousin (and your niece)
So, the answer is: her first cousin, and your niece.
What else can I help you with?
How do you call your mother's or father's brothers and sisters?
Your parent's brothers are your uncles and your parent's sisters are your aunts.
What you call sisters daughter as?
If she is your sisters daughter then she is your neice :)
What do you call your sisters sisters daughter?
She is your niece.
What to call your maternal uncle's daughter?
Your uncle's daughter is your first cousin. In the English language, it does not matter whether the uncle is a maternal uncle or a paternal uncle. All the children of your aunts and uncles are your first cousins.
What will I call my uncles daughter?
Your cousin. If it's one of your parents' brothers, your first cousin. If it's one of their first cousins, it's your second cousin. If it's one of their second cousin, it's your third cousin and so on.
What do you call your sisters daughter?
She is your niece.
What you will call sisters daughter as?
Niece.
What you call to sisters daughter?
Neice
What do you call sisters daughter as?
niece
Why we call our mrother's sister son?
Our cousins are our mothers sisters son :)
What do you call children of 2 brothers married to 2 sisters?
cousins
Why are some kids uncles?
Your uncle/aunt's son/daughter is an adult and you are still small, your uncle/aunt's daughter had a child, and that child will call you uncle. Uncles/aunts are your dad/mom's siblings.
