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The daughter of your mother's sister is your first cousin.
Your mother's sister is your aunt and her daughter is your first cousin.
This question is inconclusive it has no correlation or form of obtaining an answer.
Your mother's sister is your aunt.Your aunt's daughter's daughter is her granddaughter, and you first cousin, once removed.
You daughter's husband's mother is your daughter's mother-in-law. The English language has no term for a relationship between you and your daughter's mother-in-law.
step-grandaughter
She is the co-mother in law of you and your daughter's father in law is your co father in law. :-)
daughter
Father or Mother
Daughter
second cousin
Your mother's mother is your grandmother.Your grandmother's brother is your great uncle.Your great uncle's daughter is your mother's first cousin, and your first cousin, once removed.