It would be her second cousin once removed, I'm pretty sure.
First cousins, twice removed. Aunts daughter is your cousin. Aunts daughters daughter is cousin once removed Aunts daughters daughters daughter is cousin twice removed.
She is your first cousin, once removed, because your father's brother is your uncle, your uncle's son is your first cousin and your first cousin's daughter is your first cousin, once removed. She and your child will be second cousins to each other.
The child of your first cousin, once removed, is your first cousin, twice removed.
The son of your First Cousin Once Removed, is your First Cousin Twice Removed.
They would be your second cousin. Your great aunt is the sister of one of your grandparents. Your parents and the granddaughter's parents are first cousins.
If it is your first cousin, they are your first cousin once removed.
The child of your first cousin, once removed, is your first cousin, twice removed, or is your second cousin, depending.
The son of your first cousin, twice removed, is your first cousin, thrice (3 times) removed.
Your first cousin's child is your first cousin once removed.
Your first cousin's granddaughter is your first cousin, twice removed.
Your cousin's daughter is called your first cousin, once removed. Although the term "second cousin" is sometimes used for this relationship, it is technically incorrect.
Your first cousin's son is your first cousin, once removed. Your second cousin's son is your second cousin, once removed.