Your mother's sister would be her great aunt.
There is no reason a mother can not give a baby shower for her daughter. However, generally one of her of her girlfriends may do this, but you could have a baby shower for the relatives in the family or simply decide to have the baby shower for her. Either way is etiquette.
The mum's baby would be an aunt or an uncle, depending on the gender.
Since your mother and her sister have thesame aunts and uncles, your mother's sister's aunt is your grand aunt or, as some sat, your great aunt.
Your aunt's baby is your cousin.
Technically, your'e not related if they're not married. If they were married, your uncle's girlfriend would be your 'aunt', so her daughter would be your 'first cousin' and her baby would be your 'first cousin, once removed."
No, you would only be an aunt if a sister had a baby. If your cousin had a baby then the baby would be your second 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.
When someone gives you a baby shower a nice Thank You card is sufficient and you do not have to give them a gift.
Not for that reason alone. The mother would have to be proven unfit for one reason or another. If she is financially unsound enough to be of harm to the baby, then there is the possibility.
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.