Aunt in-law
Your Aunt is your children's Great Aunt.
Your aunt is your daughter's great aunt. Your daughter is your aunt's great niece.
it is a small time period that you and the person in your relation ship stop and think about how your relation ship is going then you decide if you want to keep your relation ship or not. it is the time to think about your relation ship basically.
Your Aunt's first cousin may be your second cousin, onve removed or may be no relation to you at all.
You granddaughter is a great great niece of your aunt. Your aunt is your granddaughter's great great aunt.
Your husband and your aunt are not related to each other.
your grandma
Your Aunt's niece is you (if you are female), your sister, or your First Cousin.
Your Aunt/Uncle's child.
Her aunt
The daughter of your aunt is your first cousin. The daughter of your great aunt is your first cousin, once removed.
No relation whatsoever. You will be an aunt or uncle to your sister's child and your brother-in-law's sister will be the child's aunt, but that's as close as it gets.