It could be one of two answers. They could be third cousins. Or they could a first cousins four times removed.
Your first cousin is your granddaughter's first cousin twice removed.
You and the granddaughter of your great grandmother's first cousin are third cousins, once removed.
Your granddaughter and your first cousin are first cousins, twice removed, to each other.
first cousin, once removed.
Your first cousin is your granddaughter's first cousin twice removed.
Your first cousin's granddaughter is your first cousin, twice removed.
Your uncle's child is your first cousin. His grandchild is your first cousin, once removed. You are also that grandchild's first cousin, once removed.
She would be your first cousin, twice removed. "Twice removed" means that the relative has two of the same great-grandparents as you.
Your granddaughter and your first cousin are first cousins, twice removed, to each other.
Your aunt's granddaughter is your first cousin once removed.
Your first cousin's granddaughter is your first cousin, twice removed. Your second cousin's granddaughter is your second cousin, twice removed. Your third cousin's granddaughter is your third cousin, twice removed. And so forth...
Your daughter and your first cousin's daughter are second cousins to each other. Your daughter and your first cousin's granddaughter are second cousins, once removed, to each other. Your granddaughter and your first cousin's granddaughter are third cousins to each other.