Yes. You would definitly be an Aunt!
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Your aunt's baby is your cousin.
Your sister's aunt (who is also your aunt) is the baby's great aunt. The baby is a great niece or great nephew of your sister's aunt.
The great aunt is the great niece's baby's great-great aunt.
Aunt Harriet was found dead in the lake and her baby was missing.
Your aunt's baby would be your cousin
You become an aunt or an uncle depending on what gender you are.
An aunt!
That's easy cousins.
Once the baby is born, you are considered to be its grand aunt or grand uncle.
most likely the aunt did something to the child when it was young to make it cry whenever the child sees the aunt.
You would be the Aunt or Uncle.