Father - Mother - Brother - Sister - Uncle - Aunt Father In Law - Mother In Law - Sister In Law Sons And Daughters Of Brothers And Sisters And Other Women . And Of Course Husband And Her Children .
Mother Nature's husband is Father Nature.
Your mother's husband is your father. His father-in-law is your mother's father, your grandfather. Your grandfather's son is your mother's brother, and your uncle. Your uncle's daughter is your first cousin.
You can call her by her first name or if your comfortable some son-in-laws call them mom.
Mother's brother: Mama Father's brother or Mother's sister's husband or Father's sister's husband: Kaka
In most cases, your sister's mother is also your mother, and her husband is your father. If you and your baby sister have the same father but different mothers, your sister's mother's father is your father. If you and you sister have the same mother but different fathers, your baby sister's father is your step-father if he is married to your mother.
Your uncle is the brother of your mother or your father - or the husband of the sister of your mother or your father.
mother/father in law
Your mother's new husband is your step-father and you are his step-son or step-daughter.
You're not related, I've added a related link below explaing this.
Daughters? (A female child is a daughter of their mother and father)
No, unless the baby's biological father relenquishes his parental rights, he would get custody of the child if the mother dies, not her husband. The biological father must sign his rights away to the mother's husband.